Add archived parquet as int. package (#9912)

Since github.com/minio/parquet-go is archived add it as internal package.
This commit is contained in:
Klaus Post 2020-06-25 07:31:16 -07:00 committed by GitHub
parent b1705599e1
commit 2d0f65a5e3
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
51 changed files with 19278 additions and 3 deletions

5
go.mod
View file

@ -5,6 +5,7 @@ go 1.13
require (
cloud.google.com/go v0.39.0
contrib.go.opencensus.io/exporter/ocagent v0.5.0 // indirect
git.apache.org/thrift.git v0.13.0
github.com/Azure/azure-pipeline-go v0.2.1
github.com/Azure/azure-storage-blob-go v0.8.0
github.com/Azure/go-autorest v11.7.1+incompatible // indirect
@ -69,7 +70,6 @@ require (
github.com/minio/cli v1.22.0
github.com/minio/highwayhash v1.0.0
github.com/minio/minio-go/v6 v6.0.58-0.20200612001654-a57fec8037ec
github.com/minio/parquet-go v0.0.0-20200414234858-838cfa8aae61
github.com/minio/sha256-simd v0.1.1
github.com/minio/simdjson-go v0.1.5-0.20200303142138-b17fe061ea37
github.com/minio/sio v0.2.0
@ -90,6 +90,7 @@ require (
github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
github.com/nsqio/go-nsq v1.0.7
github.com/philhofer/fwd v1.0.0 // indirect
github.com/pierrec/lz4 v2.4.0+incompatible
github.com/pkg/errors v0.8.1
github.com/prometheus/client_golang v0.9.3
github.com/rcrowley/go-metrics v0.0.0-20190704165056-9c2d0518ed81 // indirect
@ -103,6 +104,8 @@ require (
github.com/soheilhy/cmux v0.1.4 // indirect
github.com/spaolacci/murmur3 v1.1.0 // indirect
github.com/streadway/amqp v0.0.0-20190404075320-75d898a42a94
github.com/tidwall/gjson v1.3.5
github.com/tidwall/sjson v1.0.4
github.com/tinylib/msgp v1.1.1
github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5 // indirect
github.com/ugorji/go v1.1.5-pre // indirect

View file

@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

View file

@ -0,0 +1,36 @@
GOPATH := $(shell go env GOPATH)
all: check
getdeps:
@if [ ! -f ${GOPATH}/bin/golint ]; then echo "Installing golint" && go get -u golang.org/x/lint/golint; fi
@if [ ! -f ${GOPATH}/bin/gocyclo ]; then echo "Installing gocyclo" && go get -u github.com/fzipp/gocyclo; fi
@if [ ! -f ${GOPATH}/bin/misspell ]; then echo "Installing misspell" && go get -u github.com/client9/misspell/cmd/misspell; fi
@if [ ! -f ${GOPATH}/bin/ineffassign ]; then echo "Installing ineffassign" && go get -u github.com/gordonklaus/ineffassign; fi
vet:
@echo "Running $@"
@go vet *.go
fmt:
@echo "Running $@"
@gofmt -d *.go
lint:
@echo "Running $@"
@${GOPATH}/bin/golint -set_exit_status
cyclo:
@echo "Running $@"
@${GOPATH}/bin/gocyclo -over 200 .
spelling:
@${GOPATH}/bin/misspell -locale US -error *.go README.md
ineffassign:
@echo "Running $@"
@${GOPATH}/bin/ineffassign .
check: getdeps vet fmt lint cyclo spelling ineffassign
@echo "Running unit tests"
@go test -tags kqueue ./...

View file

@ -0,0 +1,3 @@
# parquet-go
Modified version of https://github.com/xitongsys/parquet-go

View file

@ -0,0 +1,154 @@
/*
* Minio Cloud Storage, (C) 2018 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"io"
"strings"
"git.apache.org/thrift.git/lib/go/thrift"
"github.com/minio/minio-go/v6/pkg/set"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
func getColumns(
rowGroup *parquet.RowGroup,
columnNames set.StringSet,
schemaElements []*parquet.SchemaElement,
getReaderFunc GetReaderFunc,
) (nameColumnMap map[string]*column, err error) {
nameIndexMap := make(map[string]int)
for colIndex, columnChunk := range rowGroup.GetColumns() {
meta := columnChunk.GetMetaData()
columnName := strings.Join(meta.GetPathInSchema(), ".")
if columnNames != nil && !columnNames.Contains(columnName) {
continue
}
// Ignore column spanning into another file.
if columnChunk.GetFilePath() != "" {
continue
}
offset := meta.GetDataPageOffset()
if meta.DictionaryPageOffset != nil {
offset = meta.GetDictionaryPageOffset()
}
size := meta.GetTotalCompressedSize()
rc, err := getReaderFunc(offset, size)
if err != nil {
return nil, err
}
thriftReader := thrift.NewTBufferedTransport(thrift.NewStreamTransportR(rc), int(size))
if nameColumnMap == nil {
nameColumnMap = make(map[string]*column)
}
nameColumnMap[columnName] = &column{
name: columnName,
metadata: meta,
schemaElements: schemaElements,
rc: rc,
thriftReader: thriftReader,
valueType: meta.GetType(),
}
// First element of []*parquet.SchemaElement from parquet file metadata is 'schema'
// which is always skipped, hence colIndex + 1 is valid.
nameIndexMap[columnName] = colIndex + 1
}
for name := range nameColumnMap {
nameColumnMap[name].nameIndexMap = nameIndexMap
}
return nameColumnMap, nil
}
type column struct {
name string
endOfValues bool
valueIndex int
valueType parquet.Type
metadata *parquet.ColumnMetaData
schemaElements []*parquet.SchemaElement
nameIndexMap map[string]int
dictPage *page
dataTable *table
rc io.ReadCloser
thriftReader *thrift.TBufferedTransport
}
func (column *column) close() (err error) {
if column.rc != nil {
err = column.rc.Close()
column.rc = nil
}
return err
}
func (column *column) readPage() {
page, _, _, err := readPage(
column.thriftReader,
column.metadata,
column.nameIndexMap,
column.schemaElements,
)
if err != nil {
column.endOfValues = true
return
}
if page.Header.GetType() == parquet.PageType_DICTIONARY_PAGE {
column.dictPage = page
column.readPage()
return
}
page.decode(column.dictPage)
if column.dataTable == nil {
column.dataTable = newTableFromTable(page.DataTable)
}
column.dataTable.Merge(page.DataTable)
}
func (column *column) read() (value interface{}, valueType parquet.Type) {
if column.dataTable == nil {
column.readPage()
column.valueIndex = 0
}
if column.endOfValues {
return nil, column.metadata.GetType()
}
value = column.dataTable.Values[column.valueIndex]
column.valueIndex++
if len(column.dataTable.Values) == column.valueIndex {
column.dataTable = nil
}
return value, column.metadata.GetType()
}

View file

@ -0,0 +1,95 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
func valuesToInterfaces(values interface{}, valueType parquet.Type) (tableValues []interface{}) {
switch valueType {
case parquet.Type_BOOLEAN:
for _, v := range values.([]bool) {
tableValues = append(tableValues, v)
}
case parquet.Type_INT32:
for _, v := range values.([]int32) {
tableValues = append(tableValues, v)
}
case parquet.Type_INT64:
for _, v := range values.([]int64) {
tableValues = append(tableValues, v)
}
case parquet.Type_FLOAT:
for _, v := range values.([]float32) {
tableValues = append(tableValues, v)
}
case parquet.Type_DOUBLE:
for _, v := range values.([]float64) {
tableValues = append(tableValues, v)
}
case parquet.Type_INT96, parquet.Type_BYTE_ARRAY, parquet.Type_FIXED_LEN_BYTE_ARRAY:
for _, v := range values.([][]byte) {
tableValues = append(tableValues, v)
}
}
return tableValues
}
func interfacesToValues(values []interface{}, valueType parquet.Type) interface{} {
switch valueType {
case parquet.Type_BOOLEAN:
bs := make([]bool, len(values))
for i := range values {
bs[i] = values[i].(bool)
}
return bs
case parquet.Type_INT32:
i32s := make([]int32, len(values))
for i := range values {
i32s[i] = values[i].(int32)
}
return i32s
case parquet.Type_INT64:
i64s := make([]int64, len(values))
for i := range values {
i64s[i] = values[i].(int64)
}
return i64s
case parquet.Type_FLOAT:
f32s := make([]float32, len(values))
for i := range values {
f32s[i] = values[i].(float32)
}
return f32s
case parquet.Type_DOUBLE:
f64s := make([]float64, len(values))
for i := range values {
f64s[i] = values[i].(float64)
}
return f64s
case parquet.Type_INT96, parquet.Type_BYTE_ARRAY, parquet.Type_FIXED_LEN_BYTE_ARRAY:
array := make([][]byte, len(values))
for i := range values {
array[i] = values[i].([]byte)
}
return array
}
return nil
}

View file

@ -0,0 +1,144 @@
package common
import (
"bytes"
"compress/gzip"
"fmt"
"io/ioutil"
"github.com/klauspost/compress/snappy"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/pierrec/lz4"
)
// ToSliceValue converts values to a slice value.
func ToSliceValue(values []interface{}, parquetType parquet.Type) interface{} {
switch parquetType {
case parquet.Type_BOOLEAN:
bs := make([]bool, len(values))
for i := range values {
bs[i] = values[i].(bool)
}
return bs
case parquet.Type_INT32:
i32s := make([]int32, len(values))
for i := range values {
i32s[i] = values[i].(int32)
}
return i32s
case parquet.Type_INT64:
i64s := make([]int64, len(values))
for i := range values {
i64s[i] = values[i].(int64)
}
return i64s
case parquet.Type_FLOAT:
f32s := make([]float32, len(values))
for i := range values {
f32s[i] = values[i].(float32)
}
return f32s
case parquet.Type_DOUBLE:
f64s := make([]float64, len(values))
for i := range values {
f64s[i] = values[i].(float64)
}
return f64s
case parquet.Type_BYTE_ARRAY:
array := make([][]byte, len(values))
for i := range values {
array[i] = values[i].([]byte)
}
return array
}
return nil
}
// BitWidth returns bits count required to accommodate given value.
func BitWidth(ui64 uint64) (width int32) {
for ; ui64 != 0; ui64 >>= 1 {
width++
}
return width
}
// Compress compresses given data.
func Compress(compressionType parquet.CompressionCodec, data []byte) ([]byte, error) {
switch compressionType {
case parquet.CompressionCodec_UNCOMPRESSED:
return data, nil
case parquet.CompressionCodec_SNAPPY:
return snappy.Encode(nil, data), nil
case parquet.CompressionCodec_GZIP:
buf := new(bytes.Buffer)
writer := gzip.NewWriter(buf)
n, err := writer.Write(data)
if err != nil {
return nil, err
}
if n != len(data) {
return nil, fmt.Errorf("short writes")
}
if err = writer.Flush(); err != nil {
return nil, err
}
if err = writer.Close(); err != nil {
return nil, err
}
return buf.Bytes(), nil
case parquet.CompressionCodec_LZ4:
buf := new(bytes.Buffer)
writer := lz4.NewWriter(buf)
n, err := writer.Write(data)
if err != nil {
return nil, err
}
if n != len(data) {
return nil, fmt.Errorf("short writes")
}
if err = writer.Flush(); err != nil {
return nil, err
}
if err = writer.Close(); err != nil {
return nil, err
}
return buf.Bytes(), nil
}
return nil, fmt.Errorf("unsupported compression codec %v", compressionType)
}
// Uncompress uncompresses given data.
func Uncompress(compressionType parquet.CompressionCodec, data []byte) ([]byte, error) {
switch compressionType {
case parquet.CompressionCodec_UNCOMPRESSED:
return data, nil
case parquet.CompressionCodec_SNAPPY:
return snappy.Decode(nil, data)
case parquet.CompressionCodec_GZIP:
reader, err := gzip.NewReader(bytes.NewReader(data))
if err != nil {
return nil, err
}
defer reader.Close()
return ioutil.ReadAll(reader)
case parquet.CompressionCodec_LZ4:
return ioutil.ReadAll(lz4.NewReader(bytes.NewReader(data)))
}
return nil, fmt.Errorf("unsupported compression codec %v", compressionType)
}

View file

@ -0,0 +1,127 @@
/*
* Minio Cloud Storage, (C) 2018 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"bytes"
"fmt"
"io/ioutil"
"sync"
"github.com/klauspost/compress/gzip"
"github.com/klauspost/compress/snappy"
"github.com/klauspost/compress/zstd"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/pierrec/lz4"
)
type compressionCodec parquet.CompressionCodec
var zstdOnce sync.Once
var zstdEnc *zstd.Encoder
var zstdDec *zstd.Decoder
func initZstd() {
zstdOnce.Do(func() {
zstdEnc, _ = zstd.NewWriter(nil, zstd.WithZeroFrames(true))
zstdDec, _ = zstd.NewReader(nil)
})
}
func (c compressionCodec) compress(buf []byte) ([]byte, error) {
switch parquet.CompressionCodec(c) {
case parquet.CompressionCodec_UNCOMPRESSED:
return buf, nil
case parquet.CompressionCodec_SNAPPY:
return snappy.Encode(nil, buf), nil
case parquet.CompressionCodec_GZIP:
byteBuf := new(bytes.Buffer)
writer := gzip.NewWriter(byteBuf)
n, err := writer.Write(buf)
if err != nil {
return nil, err
}
if n != len(buf) {
return nil, fmt.Errorf("short writes")
}
if err = writer.Flush(); err != nil {
return nil, err
}
if err = writer.Close(); err != nil {
return nil, err
}
return byteBuf.Bytes(), nil
case parquet.CompressionCodec_LZ4:
byteBuf := new(bytes.Buffer)
writer := lz4.NewWriter(byteBuf)
n, err := writer.Write(buf)
if err != nil {
return nil, err
}
if n != len(buf) {
return nil, fmt.Errorf("short writes")
}
if err = writer.Flush(); err != nil {
return nil, err
}
if err = writer.Close(); err != nil {
return nil, err
}
return byteBuf.Bytes(), nil
case parquet.CompressionCodec_ZSTD:
initZstd()
return zstdEnc.EncodeAll(buf, nil), nil
}
return nil, fmt.Errorf("invalid compression codec %v", c)
}
func (c compressionCodec) uncompress(buf []byte) ([]byte, error) {
switch parquet.CompressionCodec(c) {
case parquet.CompressionCodec_UNCOMPRESSED:
return buf, nil
case parquet.CompressionCodec_SNAPPY:
return snappy.Decode(nil, buf)
case parquet.CompressionCodec_GZIP:
reader, err := gzip.NewReader(bytes.NewReader(buf))
if err != nil {
return nil, err
}
defer reader.Close()
return ioutil.ReadAll(reader)
case parquet.CompressionCodec_LZ4:
return ioutil.ReadAll(lz4.NewReader(bytes.NewReader(buf)))
case parquet.CompressionCodec_ZSTD:
initZstd()
return zstdDec.DecodeAll(buf, nil)
}
return nil, fmt.Errorf("invalid compression codec %v", c)
}

View file

@ -0,0 +1,618 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"reflect"
"testing"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/schema"
)
func TestPopulateGroupList(t *testing.T) {
requiredList1 := schema.NewTree()
{
requiredGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("group", requiredGroup); err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("group.list", list); err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("group.list.element", requiredElement); err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("group.list.element.col", requiredCol); err != nil {
t.Fatal(err)
}
if _, _, err := requiredList1.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
requiredList2 := schema.NewTree()
{
requiredGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_UINT_32),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("group", requiredGroup); err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("group.list", list); err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("group.list.element", requiredElement); err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("group.list.element.col", optionalCol); err != nil {
t.Fatal(err)
}
if _, _, err := requiredList2.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
requiredList3 := schema.NewTree()
{
requiredGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredList3.Set("group", requiredGroup); err != nil {
t.Fatal(err)
}
if err = requiredList3.Set("group.list", list); err != nil {
t.Fatal(err)
}
if err = requiredList3.Set("group.list.element", optionalElement); err != nil {
t.Fatal(err)
}
if err = requiredList3.Set("group.list.element.col", requiredCol); err != nil {
t.Fatal(err)
}
if _, _, err := requiredList3.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
requiredList4 := schema.NewTree()
{
requiredGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_UINT_32),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredList4.Set("group", requiredGroup); err != nil {
t.Fatal(err)
}
if err = requiredList4.Set("group.list", list); err != nil {
t.Fatal(err)
}
if err = requiredList4.Set("group.list.element", optionalElement); err != nil {
t.Fatal(err)
}
if err = requiredList4.Set("group.list.element.col", optionalCol); err != nil {
t.Fatal(err)
}
if _, _, err := requiredList4.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalList1 := schema.NewTree()
{
optionalGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("group", optionalGroup); err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("group.list", list); err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("group.list.element", requiredElement); err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("group.list.element.col", requiredCol); err != nil {
t.Fatal(err)
}
if _, _, err := optionalList1.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalList2 := schema.NewTree()
{
optionalGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_UINT_32),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("group", optionalGroup); err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("group.list", list); err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("group.list.element", requiredElement); err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("group.list.element.col", optionalCol); err != nil {
t.Fatal(err)
}
if _, _, err := optionalList2.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalList3 := schema.NewTree()
{
optionalGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalList3.Set("group", optionalGroup); err != nil {
t.Fatal(err)
}
if err = optionalList3.Set("group.list", list); err != nil {
t.Fatal(err)
}
if err = optionalList3.Set("group.list.element", optionalElement); err != nil {
t.Fatal(err)
}
if err = optionalList3.Set("group.list.element.col", requiredCol); err != nil {
t.Fatal(err)
}
if _, _, err := optionalList3.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalList4 := schema.NewTree()
{
optionalGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_UINT_32),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalList4.Set("group", optionalGroup); err != nil {
t.Fatal(err)
}
if err = optionalList4.Set("group.list", list); err != nil {
t.Fatal(err)
}
if err = optionalList4.Set("group.list.element", optionalElement); err != nil {
t.Fatal(err)
}
if err = optionalList4.Set("group.list.element.col", optionalCol); err != nil {
t.Fatal(err)
}
if _, _, err := optionalList4.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
result1 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{1},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result2 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20},
definitionLevels: []int64{1, 1},
repetitionLevels: []int64{0, 1},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v20,
},
}
result3 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{1},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result4 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result5 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20},
definitionLevels: []int64{2, 2},
repetitionLevels: []int64{0, 1},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v20,
},
}
result6 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result7 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{3},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result8 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20},
definitionLevels: []int64{3, 3},
repetitionLevels: []int64{0, 1},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v20,
},
}
result9 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result10 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{3},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result11 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{4},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result12 := map[string]*Column{
"group.list.element.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20},
definitionLevels: []int64{4, 4},
repetitionLevels: []int64{0, 1},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v20,
},
}
testCases := []struct {
schemaTree *schema.Tree
data string
expectedResult map[string]*Column
expectErr bool
}{
{requiredList1, `{}`, nil, true}, // err: group: nil value for required field
{requiredList1, `{"group": null}`, nil, true}, // err: group: nil value for required field
{requiredList1, `{"group": [{"col": null}]}`, nil, true}, // err: group.list.element.col: nil value for required field
{requiredList1, `{"group": [{"col": 10}]}`, result1, false},
{requiredList1, `{"group": [{"col": 10}, {"col": 20}]}`, result2, false},
{requiredList2, `{}`, nil, true}, // err: group: nil value for required field
{requiredList2, `{"group": null}`, nil, true}, // err: group: nil value for required field
{requiredList2, `{"group": [{"col": null}]}`, result3, false},
{requiredList2, `{"group": [{"col": 10}]}`, result4, false},
{requiredList2, `{"group": [{"col": 10}, {"col": 20}]}`, result5, false},
{requiredList3, `{}`, nil, true}, // err: group: nil value for required field
{requiredList3, `{"group": null}`, nil, true}, // err: group: nil value for required field
{requiredList3, `{"group": [{"col": null}]}`, nil, true}, // err: group.list.element.col: nil value for required field
{requiredList3, `{"group": [{"col": 10}]}`, result4, false},
{requiredList3, `{"group": [{"col": 10}, {"col": 20}]}`, result5, false},
{requiredList4, `{}`, nil, true}, // err: group: nil value for required field
{requiredList4, `{"group": null}`, nil, true}, // err: group: nil value for required field
{requiredList4, `{"group": [{"col": null}]}`, result6, false},
{requiredList4, `{"group": [{"col": 10}]}`, result7, false},
{requiredList4, `{"group": [{"col": 10}, {"col": 20}]}`, result8, false},
{optionalList1, `{}`, result9, false},
{optionalList1, `{"group": null}`, result9, false},
{optionalList1, `{"group": [{"col": null}]}`, nil, true}, // err: group.list.element.col: nil value for required field
{optionalList1, `{"group": [{"col": 10}]}`, result4, false},
{optionalList1, `{"group": [{"col": 10}, {"col": 20}]}`, result5, false},
{optionalList2, `{}`, result9, false},
{optionalList2, `{"group": null}`, result9, false},
{optionalList2, `{"group": [{"col": null}]}`, result6, false},
{optionalList2, `{"group": [{"col": 10}]}`, result7, false},
{optionalList2, `{"group": [{"col": 10}, {"col": 20}]}`, result8, false},
{optionalList3, `{}`, result9, false},
{optionalList3, `{"group": null}`, result9, false},
{optionalList3, `{"group": [{"col": null}]}`, nil, true}, // err: group.list.element.col: nil value for required field
{optionalList3, `{"group": [{"col": 10}]}`, result7, false},
{optionalList3, `{"group": [{"col": 10}, {"col": 20}]}`, result8, false},
{optionalList4, `{}`, result9, false},
{optionalList4, `{"group": null}`, result9, false},
{optionalList4, `{"group": [{"col": null}]}`, result10, false},
{optionalList4, `{"group": [{"col": 10}]}`, result11, false},
{optionalList4, `{"group": [{"col": 10}, {"col": 20}]}`, result12, false},
}
for i, testCase := range testCases {
result, err := UnmarshalJSON([]byte(testCase.data), testCase.schemaTree)
expectErr := (err != nil)
if testCase.expectErr != expectErr {
t.Fatalf("case %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
}
if !testCase.expectErr {
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
}

View file

@ -0,0 +1,237 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"reflect"
"testing"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/schema"
)
func TestPopulateGroupType(t *testing.T) {
requiredGroup1 := schema.NewTree()
{
requiredGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_REQUIRED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredGroup1.Set("group", requiredGroup); err != nil {
t.Fatal(err)
}
if err = requiredGroup1.Set("group.col", requiredCol); err != nil {
t.Fatal(err)
}
if _, _, err := requiredGroup1.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
requiredGroup2 := schema.NewTree()
{
requiredGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_REQUIRED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_UINT_32),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredGroup2.Set("group", requiredGroup); err != nil {
t.Fatal(err)
}
if err = requiredGroup2.Set("group.col", optionalCol); err != nil {
t.Fatal(err)
}
if _, _, err := requiredGroup2.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalGroup1 := schema.NewTree()
{
optionalGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_OPTIONAL,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalGroup1.Set("group", optionalGroup); err != nil {
t.Fatal(err)
}
if err = optionalGroup1.Set("group.col", requiredCol); err != nil {
t.Fatal(err)
}
if _, _, err := optionalGroup1.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalGroup2 := schema.NewTree()
{
optionalGroup, err := schema.NewElement("group", parquet.FieldRepetitionType_OPTIONAL,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_UINT_32),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalGroup2.Set("group", optionalGroup); err != nil {
t.Fatal(err)
}
if err = optionalGroup2.Set("group.col", optionalCol); err != nil {
t.Fatal(err)
}
if _, _, err := optionalGroup2.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
result1 := map[string]*Column{
"group.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result2 := map[string]*Column{
"group.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result3 := map[string]*Column{
"group.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{1},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result4 := map[string]*Column{
"group.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{1},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result5 := map[string]*Column{
"group.col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
testCases := []struct {
schemaTree *schema.Tree
data string
expectedResult map[string]*Column
expectErr bool
}{
{requiredGroup1, `{}`, nil, true}, // err: group: nil value for required field
{requiredGroup1, `{"group": null}`, nil, true}, // err: group: nil value for required field
{requiredGroup1, `{"group": {"col": null}}`, nil, true}, // err: group.col: nil value for required field
{requiredGroup1, `{"group": {"col": 10}}`, result1, false},
{requiredGroup2, `{}`, nil, true}, // err: group: nil value for required field
{requiredGroup2, `{"group": null}`, nil, true}, // err: group: nil value for required field
{requiredGroup2, `{"group": {"col": null}}`, result2, false},
{requiredGroup2, `{"group": {"col": 10}}`, result3, false},
{optionalGroup1, `{}`, result2, false},
{optionalGroup1, `{"group": null}`, result2, false},
{optionalGroup1, `{"group": {"col": null}}`, nil, true}, // err: group.col: nil value for required field
{optionalGroup1, `{"group": {"col": 10}}`, result3, false},
{optionalGroup2, `{}`, result2, false},
{optionalGroup2, `{"group": null}`, result2, false},
{optionalGroup2, `{"group": {"col": null}}`, result4, false},
{optionalGroup2, `{"group": {"col": 10}}`, result5, false},
}
for i, testCase := range testCases {
result, err := UnmarshalJSON([]byte(testCase.data), testCase.schemaTree)
expectErr := (err != nil)
if testCase.expectErr != expectErr {
t.Fatalf("case %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
}
if !testCase.expectErr {
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
}

View file

@ -0,0 +1,698 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"reflect"
"testing"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/schema"
)
func TestPopulateListOfList(t *testing.T) {
requiredList1 := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
subList, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredSubElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("col.list.element", requiredElement); err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("col.list.element.list", subList); err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("col.list.element.list.element", requiredSubElement); err != nil {
t.Fatal(err)
}
if _, _, err = requiredList1.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
requiredList2 := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
subList, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalSubElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("col.list.element", requiredElement); err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("col.list.element.list", subList); err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("col.list.element.list.element", optionalSubElement); err != nil {
t.Fatal(err)
}
if _, _, err = requiredList2.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
requiredList3 := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optioonalElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
subList, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredSubElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredList3.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if err = requiredList3.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = requiredList3.Set("col.list.element", optioonalElement); err != nil {
t.Fatal(err)
}
if err = requiredList3.Set("col.list.element.list", subList); err != nil {
t.Fatal(err)
}
if err = requiredList3.Set("col.list.element.list.element", requiredSubElement); err != nil {
t.Fatal(err)
}
if _, _, err = requiredList3.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
requiredList4 := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optioonalElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
subList, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalSubElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredList4.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if err = requiredList4.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = requiredList4.Set("col.list.element", optioonalElement); err != nil {
t.Fatal(err)
}
if err = requiredList4.Set("col.list.element.list", subList); err != nil {
t.Fatal(err)
}
if err = requiredList4.Set("col.list.element.list.element", optionalSubElement); err != nil {
t.Fatal(err)
}
if _, _, err = requiredList4.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalList1 := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
subList, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredSubElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("col.list.element", requiredElement); err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("col.list.element.list", subList); err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("col.list.element.list.element", requiredSubElement); err != nil {
t.Fatal(err)
}
if _, _, err = optionalList1.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalList2 := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
subList, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalSubElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("col.list.element", requiredElement); err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("col.list.element.list", subList); err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("col.list.element.list.element", optionalSubElement); err != nil {
t.Fatal(err)
}
if _, _, err = optionalList2.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalList3 := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optioonalElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
subList, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredSubElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalList3.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if err = optionalList3.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = optionalList3.Set("col.list.element", optioonalElement); err != nil {
t.Fatal(err)
}
if err = optionalList3.Set("col.list.element.list", subList); err != nil {
t.Fatal(err)
}
if err = optionalList3.Set("col.list.element.list.element", requiredSubElement); err != nil {
t.Fatal(err)
}
if _, _, err = optionalList3.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalList4 := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optioonalElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
subList, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalSubElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalList4.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if err = optionalList4.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = optionalList4.Set("col.list.element", optioonalElement); err != nil {
t.Fatal(err)
}
if err = optionalList4.Set("col.list.element.list", subList); err != nil {
t.Fatal(err)
}
if err = optionalList4.Set("col.list.element.list.element", optionalSubElement); err != nil {
t.Fatal(err)
}
if _, _, err = optionalList4.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
result1 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result2 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20, v30, v10, v20, v10, v30},
definitionLevels: []int64{2, 2, 2, 2, 2, 2, 2},
repetitionLevels: []int64{0, 2, 1, 2, 1, 2, 2},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v30,
},
}
result3 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result4 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{3},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result5 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20, v30, v10, v20, v10, v30},
definitionLevels: []int64{3, 3, 3, 3, 3, 3, 3},
repetitionLevels: []int64{0, 2, 1, 2, 1, 2, 2},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v30,
},
}
result6 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{3},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result7 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{4},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result8 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20, v30, v10, v20, v10, v30},
definitionLevels: []int64{4, 4, 4, 4, 4, 4, 4},
repetitionLevels: []int64{0, 2, 1, 2, 1, 2, 2},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v30,
},
}
result9 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result10 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{4},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result11 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{5},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result12 := map[string]*Column{
"col.list.element.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20, v30, v10, v20, v10, v30},
definitionLevels: []int64{5, 5, 5, 5, 5, 5, 5},
repetitionLevels: []int64{0, 2, 1, 2, 1, 2, 2},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v30,
},
}
testCases := []struct {
schemaTree *schema.Tree
data string
expectedResult map[string]*Column
expectErr bool
}{
{requiredList1, `{}`, nil, true}, // err: col: nil value for required field
{requiredList1, `{"col": null}`, nil, true}, // err: col: nil value for required field
{requiredList1, `{"col": [[null]]}`, nil, true}, // err: col.list.element.list.element: nil value for required field
{requiredList1, `{"col": [[10]]}`, result1, false},
{requiredList1, `{"col": [[10, 20], [30, 10], [20, 10, 30]]}`, result2, false},
{requiredList2, `{}`, nil, true}, // err: col: nil value for required field
{requiredList2, `{"col": null}`, nil, true}, // err: col: nil value for required field
{requiredList2, `{"col": [[null]]}`, result3, false},
{requiredList2, `{"col": [[10]]}`, result4, false},
{requiredList2, `{"col": [[10, 20], [30, 10], [20, 10, 30]]}`, result5, false},
{requiredList3, `{}`, nil, true}, // err: col: nil value for required field
{requiredList3, `{"col": null}`, nil, true}, // err: col: nil value for required field
{requiredList3, `{"col": [[null]]}`, nil, true}, // err: col.list.element.list.element: nil value for required field
{requiredList3, `{"col": [[10]]}`, result4, false},
{requiredList3, `{"col": [[10, 20], [30, 10], [20, 10, 30]]}`, result5, false},
{requiredList4, `{}`, nil, true}, // err: col: nil value for required field
{requiredList4, `{"col": null}`, nil, true}, // err: col: nil value for required field
{requiredList4, `{"col": [[null]]}`, result6, false},
{requiredList4, `{"col": [[10]]}`, result7, false},
{requiredList4, `{"col": [[10, 20], [30, 10], [20, 10, 30]]}`, result8, false},
{optionalList1, `{}`, result9, false},
{optionalList1, `{"col": null}`, result9, false},
{optionalList1, `{"col": [[null]]}`, nil, true}, // err: col.list.element.list.element: nil value for required field
{optionalList1, `{"col": [[10]]}`, result4, false},
{optionalList1, `{"col": [[10, 20], [30, 10], [20, 10, 30]]}`, result5, false},
{optionalList2, `{}`, result9, false},
{optionalList2, `{"col": null}`, result9, false},
{optionalList2, `{"col": [[null]]}`, result6, false},
{optionalList2, `{"col": [[10]]}`, result7, false},
{optionalList2, `{"col": [[10, 20], [30, 10], [20, 10, 30]]}`, result8, false},
{optionalList3, `{}`, result9, false},
{optionalList3, `{"col": null}`, result9, false},
{optionalList3, `{"col": [[null]]}`, nil, true}, // err: col.list.element.list.element: nil value for required field
{optionalList3, `{"col": [[10]]}`, result7, false},
{optionalList3, `{"col": [[10, 20], [30, 10], [20, 10, 30]]}`, result8, false},
{optionalList4, `{}`, result9, false},
{optionalList4, `{"col": null}`, result9, false},
{optionalList4, `{"col": [[null]]}`, result10, false},
{optionalList4, `{"col": [[10]]}`, result11, false},
{optionalList4, `{"col": [[10, 20], [30, 10], [20, 10, 30]]}`, result12, false},
}
for i, testCase := range testCases {
result, err := UnmarshalJSON([]byte(testCase.data), testCase.schemaTree)
expectErr := (err != nil)
if testCase.expectErr != expectErr {
t.Fatalf("case %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
}
if !testCase.expectErr {
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
}

View file

@ -0,0 +1,370 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"reflect"
"testing"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/schema"
)
func TestPopulateMap(t *testing.T) {
t.Skip("Broken")
requiredMap1 := schema.NewTree()
{
mapElement, err := schema.NewElement("map", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_MAP),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
keyValue, err := schema.NewElement("key_value", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredKey, err := schema.NewElement("key", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BYTE_ARRAY), parquet.ConvertedTypePtr(parquet.ConvertedType_UTF8),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredValue, err := schema.NewElement("value", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredMap1.Set("map", mapElement); err != nil {
t.Fatal(err)
}
if err = requiredMap1.Set("map.key_value", keyValue); err != nil {
t.Fatal(err)
}
if err = requiredMap1.Set("map.key_value.key", requiredKey); err != nil {
t.Fatal(err)
}
if err = requiredMap1.Set("map.key_value.value", requiredValue); err != nil {
t.Fatal(err)
}
if _, _, err = requiredMap1.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
requiredMap2 := schema.NewTree()
{
mapElement, err := schema.NewElement("map", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_MAP),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
keyValue, err := schema.NewElement("key_value", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredKey, err := schema.NewElement("key", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BYTE_ARRAY), parquet.ConvertedTypePtr(parquet.ConvertedType_UTF8),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalValue, err := schema.NewElement("value", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredMap2.Set("map", mapElement); err != nil {
t.Fatal(err)
}
if err = requiredMap2.Set("map.key_value", keyValue); err != nil {
t.Fatal(err)
}
if err = requiredMap2.Set("map.key_value.key", requiredKey); err != nil {
t.Fatal(err)
}
if err = requiredMap2.Set("map.key_value.value", optionalValue); err != nil {
t.Fatal(err)
}
if _, _, err = requiredMap2.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalMap1 := schema.NewTree()
{
mapElement, err := schema.NewElement("map", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_MAP),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
keyValue, err := schema.NewElement("key_value", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredKey, err := schema.NewElement("key", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BYTE_ARRAY), parquet.ConvertedTypePtr(parquet.ConvertedType_UTF8),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredValue, err := schema.NewElement("value", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalMap1.Set("map", mapElement); err != nil {
t.Fatal(err)
}
if err = optionalMap1.Set("map.key_value", keyValue); err != nil {
t.Fatal(err)
}
if err = optionalMap1.Set("map.key_value.key", requiredKey); err != nil {
t.Fatal(err)
}
if err = optionalMap1.Set("map.key_value.value", requiredValue); err != nil {
t.Fatal(err)
}
if _, _, err = optionalMap1.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalMap2 := schema.NewTree()
{
mapElement, err := schema.NewElement("map", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_MAP),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
keyValue, err := schema.NewElement("key_value", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredKey, err := schema.NewElement("key", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BYTE_ARRAY), parquet.ConvertedTypePtr(parquet.ConvertedType_UTF8),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalValue, err := schema.NewElement("value", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalMap2.Set("map", mapElement); err != nil {
t.Fatal(err)
}
if err = optionalMap2.Set("map.key_value", keyValue); err != nil {
t.Fatal(err)
}
if err = optionalMap2.Set("map.key_value.key", requiredKey); err != nil {
t.Fatal(err)
}
if err = optionalMap2.Set("map.key_value.value", optionalValue); err != nil {
t.Fatal(err)
}
if _, _, err = optionalMap2.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
result1 := map[string]*Column{
"map.key_value.key": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{ten},
definitionLevels: []int64{1},
repetitionLevels: []int64{0},
},
"map.key_value.value": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{1},
repetitionLevels: []int64{1},
},
}
result2 := map[string]*Column{
"map.key_value.key": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{ten},
definitionLevels: []int64{1},
repetitionLevels: []int64{0},
},
"map.key_value.value": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{1},
repetitionLevels: []int64{1},
},
}
result3 := map[string]*Column{
"map.key_value.key": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{ten},
definitionLevels: []int64{1},
repetitionLevels: []int64{0},
},
"map.key_value.value": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{2},
repetitionLevels: []int64{1},
},
}
result4 := map[string]*Column{
"map.key_value.key": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
}
result5 := map[string]*Column{
"map.key_value.key": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{ten},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
},
"map.key_value.value": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{2},
repetitionLevels: []int64{1},
},
}
result6 := map[string]*Column{
"map.key_value.key": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{ten},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
},
"map.key_value.value": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{2},
repetitionLevels: []int64{1},
},
}
result7 := map[string]*Column{
"map.key_value.key": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{ten},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
},
"map.key_value.value": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{3},
repetitionLevels: []int64{1},
},
}
testCases := []struct {
schemaTree *schema.Tree
data string
expectedResult map[string]*Column
expectErr bool
}{
{requiredMap1, `{}`, nil, true}, // err: map: nil value for required field
{requiredMap1, `{"map": null}`, nil, true}, // err: map: nil value for required field
{requiredMap1, `{"map": {"ten": null}}`, nil, true}, // err: map.key_value.value: nil value for required field
{requiredMap1, `{"map": {"ten": 10}}`, result1, false},
{requiredMap2, `{}`, nil, true}, // err: map: nil value for required field
{requiredMap2, `{"map": null}`, nil, true}, // err: map: nil value for required field
{requiredMap2, `{"map": {"ten": null}}`, result2, false},
{requiredMap2, `{"map": {"ten": 10}}`, result3, false},
{optionalMap1, `{}`, result4, false},
{optionalMap1, `{"map": null}`, result4, false},
{optionalMap1, `{"map": {"ten": null}}`, nil, true}, // err: map.key_value.value: nil value for required field
{optionalMap1, `{"map": {"ten": 10}}`, result5, false},
{optionalMap2, `{}`, result4, false},
{optionalMap2, `{"map": null}`, result4, false},
{optionalMap2, `{"map": {"ten": null}}`, result6, false},
{optionalMap2, `{"map": {"ten": 10}}`, result7, false},
}
for i, testCase := range testCases {
result, err := UnmarshalJSON([]byte(testCase.data), testCase.schemaTree)
expectErr := (err != nil)
if testCase.expectErr != expectErr {
t.Fatalf("case %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
}
if !testCase.expectErr {
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Errorf("case %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
}

View file

@ -0,0 +1,330 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"reflect"
"testing"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/schema"
)
func TestPopulatePrimitiveList(t *testing.T) {
requiredList1 := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = requiredList1.Set("col.list.element", requiredElement); err != nil {
t.Fatal(err)
}
if _, _, err = requiredList1.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
requiredList2 := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_UINT_32),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = requiredList2.Set("col.list.element", optionalElement); err != nil {
t.Fatal(err)
}
if _, _, err = requiredList2.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalList1 := schema.NewTree()
{
optionalCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
requiredElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("col", optionalCol); err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = optionalList1.Set("col.list.element", requiredElement); err != nil {
t.Fatal(err)
}
if _, _, err = optionalList1.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalList2 := schema.NewTree()
{
optionalCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
list, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
optionalElement, err := schema.NewElement("element", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_UINT_32),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("col", optionalCol); err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("col.list", list); err != nil {
t.Fatal(err)
}
if err = optionalList2.Set("col.list.element", optionalElement); err != nil {
t.Fatal(err)
}
if _, _, err = optionalList2.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
result1 := map[string]*Column{
"col.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{1},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result2 := map[string]*Column{
"col.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20, v30},
definitionLevels: []int64{1, 1, 1},
repetitionLevels: []int64{0, 1, 1},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v30,
},
}
result3 := map[string]*Column{
"col.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{1},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result4 := map[string]*Column{
"col.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result5 := map[string]*Column{
"col.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20, v30},
definitionLevels: []int64{2, 2, 2},
repetitionLevels: []int64{0, 1, 1},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v30,
},
}
result6 := map[string]*Column{
"col.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result7 := map[string]*Column{
"col.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result8 := map[string]*Column{
"col.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{3},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result9 := map[string]*Column{
"col.list.element": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10, v20, v30},
definitionLevels: []int64{3, 3, 3},
repetitionLevels: []int64{0, 1, 1},
rowCount: 1,
maxBitWidth: 5,
minValue: v10,
maxValue: v30,
},
}
testCases := []struct {
schemaTree *schema.Tree
data string
expectedResult map[string]*Column
expectErr bool
}{
{requiredList1, `{}`, nil, true}, // err: col: nil value for required field
{requiredList1, `{"col": null}`, nil, true}, // err: col: nil value for required field
{requiredList1, `{"col": [null]}`, nil, true}, // err: col.list.element: nil value for required field
{requiredList1, `{"col": [10]}`, result1, false},
{requiredList1, `{"col": [10, 20, 30]}`, result2, false},
{requiredList2, `{}`, nil, true}, // err: col: nil value for required field
{requiredList2, `{"col": null}`, nil, true}, // err: col: nil value for required field
{requiredList2, `{"col": [null]}`, result3, false},
{requiredList2, `{"col": [10]}`, result4, false},
{requiredList2, `{"col": [10, 20, 30]}`, result5, false},
{optionalList1, `{}`, result6, false},
{optionalList1, `{"col": null}`, result6, false},
{optionalList1, `{"col": [null]}`, nil, true}, // err: col.list.element: nil value for required field
{optionalList1, `{"col": [10]}`, result4, false},
{optionalList1, `{"col": [10, 20, 30]}`, result5, false},
{optionalList2, `{}`, result6, false},
{optionalList2, `{"col": null}`, result6, false},
{optionalList2, `{"col": [null]}`, result7, false},
{optionalList2, `{"col": [10]}`, result8, false},
{optionalList2, `{"col": [10, 20, 30]}`, result9, false},
}
for i, testCase := range testCases {
result, err := UnmarshalJSON([]byte(testCase.data), testCase.schemaTree)
expectErr := (err != nil)
if testCase.expectErr != expectErr {
t.Fatalf("case %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
}
if !testCase.expectErr {
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
}

View file

@ -0,0 +1,128 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"reflect"
"testing"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/schema"
)
func TestPopulatePrimitiveType(t *testing.T) {
requiredField := schema.NewTree()
{
requiredCol, err := schema.NewElement("col", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = requiredField.Set("col", requiredCol); err != nil {
t.Fatal(err)
}
if _, _, err = requiredField.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
optionalField := schema.NewTree()
{
optionalCol, err := schema.NewElement("col", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_UINT_32),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = optionalField.Set("col", optionalCol); err != nil {
t.Fatal(err)
}
if _, _, err = optionalField.ToParquetSchema(); err != nil {
t.Fatal(err)
}
}
result1 := map[string]*Column{
"col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
result2 := map[string]*Column{
"col": {
parquetType: parquet.Type_INT32,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
rowCount: 1,
},
}
result3 := map[string]*Column{
"col": {
parquetType: parquet.Type_INT32,
values: []interface{}{v10},
definitionLevels: []int64{1},
repetitionLevels: []int64{0},
rowCount: 1,
maxBitWidth: 4,
minValue: v10,
maxValue: v10,
},
}
testCases := []struct {
schemaTree *schema.Tree
data string
expectedResult map[string]*Column
expectErr bool
}{
{requiredField, `{}`, nil, true},
{requiredField, `{"col": null}`, nil, true}, // err: col: nil value for required field
{requiredField, `{"col": 10}`, result1, false},
{optionalField, `{}`, result2, false},
{optionalField, `{"col": null}`, result2, false},
{optionalField, `{"col": 10}`, result3, false},
}
for i, testCase := range testCases {
result, err := UnmarshalJSON([]byte(testCase.data), testCase.schemaTree)
expectErr := (err != nil)
if testCase.expectErr != expectErr {
t.Fatalf("case %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
}
if !testCase.expectErr {
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
}

View file

@ -0,0 +1,680 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"bytes"
"context"
"fmt"
"strings"
"git.apache.org/thrift.git/lib/go/thrift"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/common"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/encoding"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/schema"
"github.com/tidwall/gjson"
"github.com/tidwall/sjson"
)
func getDefaultEncoding(parquetType parquet.Type) parquet.Encoding {
switch parquetType {
case parquet.Type_BOOLEAN:
return parquet.Encoding_PLAIN
case parquet.Type_INT32, parquet.Type_INT64, parquet.Type_FLOAT, parquet.Type_DOUBLE:
return parquet.Encoding_RLE_DICTIONARY
case parquet.Type_BYTE_ARRAY:
return parquet.Encoding_DELTA_LENGTH_BYTE_ARRAY
}
return parquet.Encoding_PLAIN
}
func getFirstValueElement(tree *schema.Tree) (valueElement *schema.Element) {
tree.Range(func(name string, element *schema.Element) bool {
if element.Children == nil {
valueElement = element
} else {
valueElement = getFirstValueElement(element.Children)
}
return false
})
return valueElement
}
func populate(columnDataMap map[string]*Column, input *jsonValue, tree *schema.Tree, firstValueRL int64) (map[string]*Column, error) {
var err error
pos := 0
handleElement := func(name string, element *schema.Element) bool {
pos++
dataPath := element.PathInTree
if *element.RepetitionType == parquet.FieldRepetitionType_REPEATED {
panic(fmt.Errorf("%v: repetition type must be REQUIRED or OPTIONAL type", dataPath))
}
inputValue := input.Get(name)
if *element.RepetitionType == parquet.FieldRepetitionType_REQUIRED && inputValue.IsNull() {
err = fmt.Errorf("%v: nil value for required field", dataPath)
return false
}
add := func(element *schema.Element, value interface{}, DL, RL int64) {
columnData := columnDataMap[element.PathInSchema]
if columnData == nil {
columnData = NewColumn(*element.Type)
}
columnData.add(value, DL, RL)
columnDataMap[element.PathInSchema] = columnData
}
// Handle primitive type element.
if element.Type != nil {
var value interface{}
if value, err = inputValue.GetValue(*element.Type, element.ConvertedType); err != nil {
return false
}
DL := element.MaxDefinitionLevel
if value == nil && DL > 0 {
DL--
}
RL := element.MaxRepetitionLevel
if pos == 1 {
RL = firstValueRL
}
add(element, value, DL, RL)
return true
}
addNull := func() {
valueElement := getFirstValueElement(element.Children)
DL := element.MaxDefinitionLevel
if DL > 0 {
DL--
}
RL := element.MaxRepetitionLevel
if RL > 0 {
RL--
}
add(valueElement, nil, DL, RL)
}
// Handle group type element.
if element.ConvertedType == nil {
if inputValue.IsNull() {
addNull()
return true
}
columnDataMap, err = populate(columnDataMap, inputValue, element.Children, firstValueRL)
return (err == nil)
}
// Handle list type element.
if *element.ConvertedType == parquet.ConvertedType_LIST {
if inputValue.IsNull() {
addNull()
return true
}
var results []gjson.Result
if results, err = inputValue.GetArray(); err != nil {
return false
}
listElement, _ := element.Children.Get("list")
valueElement, _ := listElement.Children.Get("element")
for i := range results {
rl := valueElement.MaxRepetitionLevel
if i == 0 {
rl = firstValueRL
}
var jsonData []byte
if jsonData, err = sjson.SetBytes([]byte{}, "element", results[i].Value()); err != nil {
return false
}
var jv *jsonValue
if jv, err = bytesToJSONValue(jsonData); err != nil {
return false
}
if columnDataMap, err = populate(columnDataMap, jv, listElement.Children, rl); err != nil {
return false
}
}
return true
}
if *element.ConvertedType == parquet.ConvertedType_MAP {
if inputValue.IsNull() {
addNull()
return true
}
keyValueElement, _ := element.Children.Get("key_value")
var rerr error
err = inputValue.Range(func(key, value gjson.Result) bool {
if !key.Exists() || key.Type == gjson.Null {
rerr = fmt.Errorf("%v.key_value.key: not found or null", dataPath)
return false
}
var jsonData []byte
if jsonData, rerr = sjson.SetBytes([]byte{}, "key", key.Value()); err != nil {
return false
}
if jsonData, rerr = sjson.SetBytes(jsonData, "value", value.Value()); err != nil {
return false
}
var jv *jsonValue
if jv, rerr = bytesToJSONValue(jsonData); rerr != nil {
return false
}
if columnDataMap, rerr = populate(columnDataMap, jv, keyValueElement.Children, firstValueRL); err != nil {
return false
}
return true
})
if err != nil {
return false
}
err = rerr
return (err == nil)
}
err = fmt.Errorf("%v: unsupported converted type %v in %v field type", dataPath, *element.ConvertedType, *element.RepetitionType)
return false
}
tree.Range(handleElement)
return columnDataMap, err
}
// Column - denotes values of a column.
type Column struct {
parquetType parquet.Type // value type.
values []interface{} // must be a slice of parquet typed values.
definitionLevels []int64 // exactly same length of values.
repetitionLevels []int64 // exactly same length of values.
rowCount int32
maxBitWidth int32
minValue interface{}
maxValue interface{}
}
func (column *Column) updateMinMaxValue(value interface{}) {
if column.minValue == nil && column.maxValue == nil {
column.minValue = value
column.maxValue = value
return
}
switch column.parquetType {
case parquet.Type_BOOLEAN:
if column.minValue.(bool) && !value.(bool) {
column.minValue = value
}
if !column.maxValue.(bool) && value.(bool) {
column.maxValue = value
}
case parquet.Type_INT32:
if column.minValue.(int32) > value.(int32) {
column.minValue = value
}
if column.maxValue.(int32) < value.(int32) {
column.maxValue = value
}
case parquet.Type_INT64:
if column.minValue.(int64) > value.(int64) {
column.minValue = value
}
if column.maxValue.(int64) < value.(int64) {
column.maxValue = value
}
case parquet.Type_FLOAT:
if column.minValue.(float32) > value.(float32) {
column.minValue = value
}
if column.maxValue.(float32) < value.(float32) {
column.maxValue = value
}
case parquet.Type_DOUBLE:
if column.minValue.(float64) > value.(float64) {
column.minValue = value
}
if column.maxValue.(float64) < value.(float64) {
column.maxValue = value
}
case parquet.Type_BYTE_ARRAY:
if bytes.Compare(column.minValue.([]byte), value.([]byte)) > 0 {
column.minValue = value
}
if bytes.Compare(column.minValue.([]byte), value.([]byte)) < 0 {
column.maxValue = value
}
}
}
func (column *Column) updateStats(value interface{}, DL, RL int64) {
if RL == 0 {
column.rowCount++
}
if value == nil {
return
}
var bitWidth int32
switch column.parquetType {
case parquet.Type_BOOLEAN:
bitWidth = 1
case parquet.Type_INT32:
bitWidth = common.BitWidth(uint64(value.(int32)))
case parquet.Type_INT64:
bitWidth = common.BitWidth(uint64(value.(int64)))
case parquet.Type_FLOAT:
bitWidth = 32
case parquet.Type_DOUBLE:
bitWidth = 64
case parquet.Type_BYTE_ARRAY:
bitWidth = int32(len(value.([]byte)))
}
if column.maxBitWidth < bitWidth {
column.maxBitWidth = bitWidth
}
column.updateMinMaxValue(value)
}
func (column *Column) add(value interface{}, DL, RL int64) {
column.values = append(column.values, value)
column.definitionLevels = append(column.definitionLevels, DL)
column.repetitionLevels = append(column.repetitionLevels, RL)
column.updateStats(value, DL, RL)
}
// AddNull - adds nil value.
func (column *Column) AddNull(DL, RL int64) {
column.add(nil, DL, RL)
}
// AddBoolean - adds boolean value.
func (column *Column) AddBoolean(value bool, DL, RL int64) {
if column.parquetType != parquet.Type_BOOLEAN {
panic(fmt.Errorf("expected %v value", column.parquetType))
}
column.add(value, DL, RL)
}
// AddInt32 - adds int32 value.
func (column *Column) AddInt32(value int32, DL, RL int64) {
if column.parquetType != parquet.Type_INT32 {
panic(fmt.Errorf("expected %v value", column.parquetType))
}
column.add(value, DL, RL)
}
// AddInt64 - adds int64 value.
func (column *Column) AddInt64(value int64, DL, RL int64) {
if column.parquetType != parquet.Type_INT64 {
panic(fmt.Errorf("expected %v value", column.parquetType))
}
column.add(value, DL, RL)
}
// AddFloat - adds float32 value.
func (column *Column) AddFloat(value float32, DL, RL int64) {
if column.parquetType != parquet.Type_FLOAT {
panic(fmt.Errorf("expected %v value", column.parquetType))
}
column.add(value, DL, RL)
}
// AddDouble - adds float64 value.
func (column *Column) AddDouble(value float64, DL, RL int64) {
if column.parquetType != parquet.Type_DOUBLE {
panic(fmt.Errorf("expected %v value", column.parquetType))
}
column.add(value, DL, RL)
}
// AddByteArray - adds byte array value.
func (column *Column) AddByteArray(value []byte, DL, RL int64) {
if column.parquetType != parquet.Type_BYTE_ARRAY {
panic(fmt.Errorf("expected %v value", column.parquetType))
}
column.add(value, DL, RL)
}
// Merge - merges columns.
func (column *Column) Merge(column2 *Column) {
if column.parquetType != column2.parquetType {
panic(fmt.Errorf("merge differs in parquet type"))
}
column.values = append(column.values, column2.values...)
column.definitionLevels = append(column.definitionLevels, column2.definitionLevels...)
column.repetitionLevels = append(column.repetitionLevels, column2.repetitionLevels...)
column.rowCount += column2.rowCount
if column.maxBitWidth < column2.maxBitWidth {
column.maxBitWidth = column2.maxBitWidth
}
column.updateMinMaxValue(column2.minValue)
column.updateMinMaxValue(column2.maxValue)
}
func (column *Column) String() string {
var strs []string
strs = append(strs, fmt.Sprintf("parquetType: %v", column.parquetType))
strs = append(strs, fmt.Sprintf("values: %v", column.values))
strs = append(strs, fmt.Sprintf("definitionLevels: %v", column.definitionLevels))
strs = append(strs, fmt.Sprintf("repetitionLevels: %v", column.repetitionLevels))
strs = append(strs, fmt.Sprintf("rowCount: %v", column.rowCount))
strs = append(strs, fmt.Sprintf("maxBitWidth: %v", column.maxBitWidth))
strs = append(strs, fmt.Sprintf("minValue: %v", column.minValue))
strs = append(strs, fmt.Sprintf("maxValue: %v", column.maxValue))
return "{" + strings.Join(strs, ", ") + "}"
}
func (column *Column) encodeValue(value interface{}, element *schema.Element) []byte {
if value == nil {
return nil
}
valueData := encoding.PlainEncode(common.ToSliceValue([]interface{}{value}, column.parquetType), column.parquetType)
if column.parquetType == parquet.Type_BYTE_ARRAY && element.ConvertedType != nil {
switch *element.ConvertedType {
case parquet.ConvertedType_UTF8, parquet.ConvertedType_DECIMAL:
valueData = valueData[4:]
}
}
return valueData
}
func (column *Column) toDataPageV2(element *schema.Element, parquetEncoding parquet.Encoding) *ColumnChunk {
var definedValues []interface{}
for _, value := range column.values {
if value != nil {
definedValues = append(definedValues, value)
}
}
var encodedData []byte
switch parquetEncoding {
case parquet.Encoding_PLAIN:
encodedData = encoding.PlainEncode(common.ToSliceValue(definedValues, column.parquetType), column.parquetType)
case parquet.Encoding_DELTA_LENGTH_BYTE_ARRAY:
var bytesSlices [][]byte
for _, value := range column.values {
bytesSlices = append(bytesSlices, value.([]byte))
}
encodedData = encoding.DeltaLengthByteArrayEncode(bytesSlices)
}
compressionType := parquet.CompressionCodec_SNAPPY
if element.CompressionType != nil {
compressionType = *element.CompressionType
}
compressedData, err := common.Compress(compressionType, encodedData)
if err != nil {
panic(err)
}
DLData := encoding.RLEBitPackedHybridEncode(
column.definitionLevels,
common.BitWidth(uint64(element.MaxDefinitionLevel)),
parquet.Type_INT64,
)
RLData := encoding.RLEBitPackedHybridEncode(
column.repetitionLevels,
common.BitWidth(uint64(element.MaxRepetitionLevel)),
parquet.Type_INT64,
)
pageHeader := parquet.NewPageHeader()
pageHeader.Type = parquet.PageType_DATA_PAGE_V2
pageHeader.CompressedPageSize = int32(len(compressedData) + len(DLData) + len(RLData))
pageHeader.UncompressedPageSize = int32(len(encodedData) + len(DLData) + len(RLData))
pageHeader.DataPageHeaderV2 = parquet.NewDataPageHeaderV2()
pageHeader.DataPageHeaderV2.NumValues = int32(len(column.values))
pageHeader.DataPageHeaderV2.NumNulls = int32(len(column.values) - len(definedValues))
pageHeader.DataPageHeaderV2.NumRows = column.rowCount
pageHeader.DataPageHeaderV2.Encoding = parquetEncoding
pageHeader.DataPageHeaderV2.DefinitionLevelsByteLength = int32(len(DLData))
pageHeader.DataPageHeaderV2.RepetitionLevelsByteLength = int32(len(RLData))
pageHeader.DataPageHeaderV2.IsCompressed = true
pageHeader.DataPageHeaderV2.Statistics = parquet.NewStatistics()
pageHeader.DataPageHeaderV2.Statistics.Min = column.encodeValue(column.minValue, element)
pageHeader.DataPageHeaderV2.Statistics.Max = column.encodeValue(column.maxValue, element)
ts := thrift.NewTSerializer()
ts.Protocol = thrift.NewTCompactProtocolFactory().GetProtocol(ts.Transport)
rawData, err := ts.Write(context.TODO(), pageHeader)
if err != nil {
panic(err)
}
rawData = append(rawData, RLData...)
rawData = append(rawData, DLData...)
rawData = append(rawData, compressedData...)
metadata := parquet.NewColumnMetaData()
metadata.Type = column.parquetType
metadata.Encodings = []parquet.Encoding{
parquet.Encoding_PLAIN,
parquet.Encoding_RLE,
parquet.Encoding_DELTA_LENGTH_BYTE_ARRAY,
}
metadata.Codec = compressionType
metadata.NumValues = int64(pageHeader.DataPageHeaderV2.NumValues)
metadata.TotalCompressedSize = int64(len(rawData))
metadata.TotalUncompressedSize = int64(pageHeader.UncompressedPageSize) + int64(len(rawData)) - int64(pageHeader.CompressedPageSize)
metadata.PathInSchema = strings.Split(element.PathInSchema, ".")
metadata.Statistics = parquet.NewStatistics()
metadata.Statistics.Min = pageHeader.DataPageHeaderV2.Statistics.Min
metadata.Statistics.Max = pageHeader.DataPageHeaderV2.Statistics.Max
chunk := new(ColumnChunk)
chunk.ColumnChunk.MetaData = metadata
chunk.dataPageLen = int64(len(rawData))
chunk.dataLen = int64(len(rawData))
chunk.data = rawData
return chunk
}
func (column *Column) toRLEDictPage(element *schema.Element) *ColumnChunk {
dictPageData, dataPageData, dictValueCount, indexBitWidth := encoding.RLEDictEncode(column.values, column.parquetType, column.maxBitWidth)
compressionType := parquet.CompressionCodec_SNAPPY
if element.CompressionType != nil {
compressionType = *element.CompressionType
}
compressedData, err := common.Compress(compressionType, dictPageData)
if err != nil {
panic(err)
}
dictPageHeader := parquet.NewPageHeader()
dictPageHeader.Type = parquet.PageType_DICTIONARY_PAGE
dictPageHeader.CompressedPageSize = int32(len(compressedData))
dictPageHeader.UncompressedPageSize = int32(len(dictPageData))
dictPageHeader.DictionaryPageHeader = parquet.NewDictionaryPageHeader()
dictPageHeader.DictionaryPageHeader.NumValues = dictValueCount
dictPageHeader.DictionaryPageHeader.Encoding = parquet.Encoding_PLAIN
ts := thrift.NewTSerializer()
ts.Protocol = thrift.NewTCompactProtocolFactory().GetProtocol(ts.Transport)
dictPageRawData, err := ts.Write(context.TODO(), dictPageHeader)
if err != nil {
panic(err)
}
dictPageRawData = append(dictPageRawData, compressedData...)
RLData := encoding.RLEBitPackedHybridEncode(
column.repetitionLevels,
common.BitWidth(uint64(element.MaxRepetitionLevel)),
parquet.Type_INT64,
)
encodedData := RLData
DLData := encoding.RLEBitPackedHybridEncode(
column.definitionLevels,
common.BitWidth(uint64(element.MaxDefinitionLevel)),
parquet.Type_INT64,
)
encodedData = append(encodedData, DLData...)
encodedData = append(encodedData, indexBitWidth)
encodedData = append(encodedData, dataPageData...)
compressedData, err = common.Compress(compressionType, encodedData)
if err != nil {
panic(err)
}
dataPageHeader := parquet.NewPageHeader()
dataPageHeader.Type = parquet.PageType_DATA_PAGE
dataPageHeader.CompressedPageSize = int32(len(compressedData))
dataPageHeader.UncompressedPageSize = int32(len(encodedData))
dataPageHeader.DataPageHeader = parquet.NewDataPageHeader()
dataPageHeader.DataPageHeader.NumValues = int32(len(column.values))
dataPageHeader.DataPageHeader.DefinitionLevelEncoding = parquet.Encoding_RLE
dataPageHeader.DataPageHeader.RepetitionLevelEncoding = parquet.Encoding_RLE
dataPageHeader.DataPageHeader.Encoding = parquet.Encoding_RLE_DICTIONARY
ts = thrift.NewTSerializer()
ts.Protocol = thrift.NewTCompactProtocolFactory().GetProtocol(ts.Transport)
dataPageRawData, err := ts.Write(context.TODO(), dataPageHeader)
if err != nil {
panic(err)
}
dataPageRawData = append(dataPageRawData, compressedData...)
metadata := parquet.NewColumnMetaData()
metadata.Type = column.parquetType
metadata.Encodings = []parquet.Encoding{
parquet.Encoding_PLAIN,
parquet.Encoding_RLE,
parquet.Encoding_DELTA_LENGTH_BYTE_ARRAY,
parquet.Encoding_RLE_DICTIONARY,
}
metadata.Codec = compressionType
metadata.NumValues = int64(dataPageHeader.DataPageHeader.NumValues)
metadata.TotalCompressedSize = int64(len(dictPageRawData)) + int64(len(dataPageRawData))
uncompressedSize := int64(dictPageHeader.UncompressedPageSize) + int64(len(dictPageData)) - int64(dictPageHeader.CompressedPageSize)
uncompressedSize += int64(dataPageHeader.UncompressedPageSize) + int64(len(dataPageData)) - int64(dataPageHeader.CompressedPageSize)
metadata.TotalUncompressedSize = uncompressedSize
metadata.PathInSchema = strings.Split(element.PathInSchema, ".")
metadata.Statistics = parquet.NewStatistics()
metadata.Statistics.Min = column.encodeValue(column.minValue, element)
metadata.Statistics.Max = column.encodeValue(column.maxValue, element)
chunk := new(ColumnChunk)
chunk.ColumnChunk.MetaData = metadata
chunk.isDictPage = true
chunk.dictPageLen = int64(len(dictPageRawData))
chunk.dataPageLen = int64(len(dataPageRawData))
chunk.dataLen = chunk.dictPageLen + chunk.dataPageLen
chunk.data = append(dictPageRawData, dataPageRawData...)
return chunk
}
// Encode an element.
func (column *Column) Encode(element *schema.Element) *ColumnChunk {
parquetEncoding := getDefaultEncoding(column.parquetType)
if element.Encoding != nil {
parquetEncoding = *element.Encoding
}
switch parquetEncoding {
case parquet.Encoding_PLAIN, parquet.Encoding_DELTA_LENGTH_BYTE_ARRAY:
return column.toDataPageV2(element, parquetEncoding)
}
return column.toRLEDictPage(element)
}
// NewColumn - creates new column data
func NewColumn(parquetType parquet.Type) *Column {
switch parquetType {
case parquet.Type_BOOLEAN, parquet.Type_INT32, parquet.Type_INT64, parquet.Type_FLOAT, parquet.Type_DOUBLE, parquet.Type_BYTE_ARRAY:
default:
panic(fmt.Errorf("unsupported parquet type %v", parquetType))
}
return &Column{
parquetType: parquetType,
}
}
// UnmarshalJSON - decodes JSON data into map of Column.
func UnmarshalJSON(data []byte, tree *schema.Tree) (map[string]*Column, error) {
if !tree.ReadOnly() {
return nil, fmt.Errorf("tree must be read only")
}
inputValue, err := bytesToJSONValue(data)
if err != nil {
return nil, err
}
columnDataMap := make(map[string]*Column)
return populate(columnDataMap, inputValue, tree, 0)
}

View file

@ -0,0 +1,369 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"reflect"
"testing"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/schema"
)
var (
v10 = int32(10)
v20 = int32(20)
v30 = int32(30)
ten = []byte("ten")
foo = []byte("foo")
bar = []byte("bar")
phone1 = []byte("1-234-567-8901")
phone2 = []byte("1-234-567-1098")
phone3 = []byte("1-111-222-3333")
)
func TestAddressBookExample(t *testing.T) {
// message AddressBook {
// required string owner;
// repeated string ownerPhoneNumbers;
// repeated group contacts {
// required string name;
// optional string phoneNumber;
// }
// }
t.Skip("Broken")
addressBook := schema.NewTree()
{
owner, err := schema.NewElement("owner", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BYTE_ARRAY), parquet.ConvertedTypePtr(parquet.ConvertedType_UTF8),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
ownerPhoneNumbers, err := schema.NewElement("ownerPhoneNumbers", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
ownerPhoneNumbersList, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
ownerPhoneNumbersElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BYTE_ARRAY), parquet.ConvertedTypePtr(parquet.ConvertedType_UTF8),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
contacts, err := schema.NewElement("contacts", parquet.FieldRepetitionType_OPTIONAL,
nil, parquet.ConvertedTypePtr(parquet.ConvertedType_LIST),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
contactsList, err := schema.NewElement("list", parquet.FieldRepetitionType_REPEATED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
contactsElement, err := schema.NewElement("element", parquet.FieldRepetitionType_REQUIRED,
nil, nil,
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
contactName, err := schema.NewElement("name", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BYTE_ARRAY), parquet.ConvertedTypePtr(parquet.ConvertedType_UTF8),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
contactPhoneNumber, err := schema.NewElement("phoneNumber", parquet.FieldRepetitionType_OPTIONAL,
parquet.TypePtr(parquet.Type_BYTE_ARRAY), parquet.ConvertedTypePtr(parquet.ConvertedType_UTF8),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err = addressBook.Set("owner", owner); err != nil {
t.Fatal(err)
}
if err = addressBook.Set("ownerPhoneNumbers", ownerPhoneNumbers); err != nil {
t.Fatal(err)
}
if err = addressBook.Set("ownerPhoneNumbers.list", ownerPhoneNumbersList); err != nil {
t.Fatal(err)
}
if err = addressBook.Set("ownerPhoneNumbers.list.element", ownerPhoneNumbersElement); err != nil {
t.Fatal(err)
}
if err = addressBook.Set("contacts", contacts); err != nil {
t.Fatal(err)
}
if err = addressBook.Set("contacts.list", contactsList); err != nil {
t.Fatal(err)
}
if err = addressBook.Set("contacts.list.element", contactsElement); err != nil {
t.Fatal(err)
}
if err = addressBook.Set("contacts.list.element.name", contactName); err != nil {
t.Fatal(err)
}
if err = addressBook.Set("contacts.list.element.phoneNumber", contactPhoneNumber); err != nil {
t.Fatal(err)
}
}
if _, _, err := addressBook.ToParquetSchema(); err != nil {
t.Fatal(err)
}
case2Data := `{
"owner": "foo"
}`
result2 := map[string]*Column{
"owner": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{foo},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
"ownerPhoneNumbers.list.element": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
"contacts.list.element.name": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
}
case3Data := `{
"owner": "foo",
"ownerPhoneNumbers": [
"1-234-567-8901"
]
}
`
result3 := map[string]*Column{
"owner": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{foo},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
"ownerPhoneNumbers.list.element": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{phone1},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
},
"contacts.list.element.name": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
}
case4Data := `{
"owner": "foo",
"ownerPhoneNumbers": [
"1-234-567-8901",
"1-234-567-1098"
]
}
`
result4 := map[string]*Column{
"owner": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{foo},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
"ownerPhoneNumbers.list.element": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{phone1, phone2},
definitionLevels: []int64{2, 2},
repetitionLevels: []int64{0, 1},
},
"contacts.list.element.name": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
}
case5Data := `{
"contacts": [
{
"name": "bar"
}
],
"owner": "foo"
}`
result5 := map[string]*Column{
"owner": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{foo},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
"ownerPhoneNumbers.list.element": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
"contacts.list.element.name": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{bar},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
},
"contacts.list.element.phoneNumber": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{nil},
definitionLevels: []int64{2},
repetitionLevels: []int64{1},
},
}
case6Data := `{
"contacts": [
{
"name": "bar",
"phoneNumber": "1-111-222-3333"
}
],
"owner": "foo"
}`
result6 := map[string]*Column{
"owner": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{foo},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
"ownerPhoneNumbers.list.element": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{nil},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
"contacts.list.element.name": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{bar},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
},
"contacts.list.element.phoneNumber": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{phone3},
definitionLevels: []int64{3},
repetitionLevels: []int64{1},
},
}
case7Data := `{
"contacts": [
{
"name": "bar",
"phoneNumber": "1-111-222-3333"
}
],
"owner": "foo",
"ownerPhoneNumbers": [
"1-234-567-8901",
"1-234-567-1098"
]
}`
result7 := map[string]*Column{
"owner": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{foo},
definitionLevels: []int64{0},
repetitionLevels: []int64{0},
},
"ownerPhoneNumbers.list.element": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{phone1, phone2},
definitionLevels: []int64{2, 2},
repetitionLevels: []int64{0, 1},
},
"contacts.list.element.name": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{bar},
definitionLevels: []int64{2},
repetitionLevels: []int64{0},
},
"contacts.list.element.phoneNumber": {
parquetType: parquet.Type_BYTE_ARRAY,
values: []interface{}{phone3},
definitionLevels: []int64{3},
repetitionLevels: []int64{1},
},
}
testCases := []struct {
data string
expectedResult map[string]*Column
expectErr bool
}{
{`{}`, nil, true}, // err: owner: nil value for required field
{case2Data, result2, false},
{case3Data, result3, false},
{case4Data, result4, false},
{case5Data, result5, false},
{case6Data, result6, false},
{case7Data, result7, false},
}
for i, testCase := range testCases {
result, err := UnmarshalJSON([]byte(testCase.data), addressBook)
expectErr := (err != nil)
if testCase.expectErr != expectErr {
t.Fatalf("case %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
}
if !testCase.expectErr {
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Errorf("case %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
}

View file

@ -0,0 +1,65 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
// ColumnChunk ...
type ColumnChunk struct {
parquet.ColumnChunk
isDictPage bool
dictPageLen int64
dataPageLen int64
dataLen int64
data []byte
}
// Data returns the data.
func (chunk *ColumnChunk) Data() []byte {
return chunk.data
}
// DataLen returns the length of the data.
func (chunk *ColumnChunk) DataLen() int64 {
return chunk.dataLen
}
// NewRowGroup creates a new row group.
func NewRowGroup(chunks []*ColumnChunk, numRows, offset int64) *parquet.RowGroup {
rows := parquet.NewRowGroup()
rows.NumRows = numRows
for _, chunk := range chunks {
rows.Columns = append(rows.Columns, &chunk.ColumnChunk)
rows.TotalByteSize += chunk.dataLen
chunk.ColumnChunk.FileOffset = offset
if chunk.isDictPage {
dictPageOffset := offset
chunk.ColumnChunk.MetaData.DictionaryPageOffset = &dictPageOffset
offset += chunk.dictPageLen
}
chunk.ColumnChunk.MetaData.DataPageOffset = offset
offset += chunk.dataPageLen
}
return rows
}

View file

@ -0,0 +1,107 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"fmt"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/tidwall/gjson"
)
type jsonValue struct {
result *gjson.Result
path *string
}
func (v *jsonValue) String() string {
if v.result == nil {
return "<nil>"
}
return fmt.Sprintf("%v", *v.result)
}
func (v *jsonValue) IsNull() bool {
return v.result == nil || v.result.Type == gjson.Null
}
func (v *jsonValue) Get(path string) *jsonValue {
if v.path != nil {
var result *gjson.Result
if *v.path == path {
result = v.result
}
return resultToJSONValue(result)
}
if v.result == nil {
return resultToJSONValue(nil)
}
result := v.result.Get(path)
if !result.Exists() {
return resultToJSONValue(nil)
}
return resultToJSONValue(&result)
}
func (v *jsonValue) GetValue(parquetType parquet.Type, convertedType *parquet.ConvertedType) (interface{}, error) {
if v.result == nil {
return nil, nil
}
return resultToParquetValue(*v.result, parquetType, convertedType)
}
func (v *jsonValue) GetArray() ([]gjson.Result, error) {
if v.result == nil {
return nil, nil
}
return resultToArray(*v.result)
}
func (v *jsonValue) Range(iterator func(key, value gjson.Result) bool) error {
if v.result == nil || v.result.Type == gjson.Null {
return nil
}
if v.result.Type != gjson.JSON || !v.result.IsObject() {
return fmt.Errorf("result is not Map but %v", v.result.Type)
}
v.result.ForEach(iterator)
return nil
}
func resultToJSONValue(result *gjson.Result) *jsonValue {
return &jsonValue{
result: result,
}
}
func bytesToJSONValue(data []byte) (*jsonValue, error) {
if !gjson.ValidBytes(data) {
return nil, fmt.Errorf("invalid JSON data")
}
result := gjson.ParseBytes(data)
return resultToJSONValue(&result), nil
}

View file

@ -0,0 +1,360 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package data
import (
"fmt"
"math"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/tidwall/gjson"
)
func resultToBool(result gjson.Result) (value interface{}, err error) {
switch result.Type {
case gjson.False, gjson.True:
return result.Bool(), nil
}
return nil, fmt.Errorf("result is not Bool but %v", result.Type)
}
func resultToInt32(result gjson.Result) (value interface{}, err error) {
if value, err = resultToInt64(result); err != nil {
return nil, err
}
if value.(int64) < math.MinInt32 || value.(int64) > math.MaxInt32 {
return nil, fmt.Errorf("int32 overflow")
}
return int32(value.(int64)), nil
}
func resultToInt64(result gjson.Result) (value interface{}, err error) {
if result.Type == gjson.Number {
return result.Int(), nil
}
return nil, fmt.Errorf("result is not Number but %v", result.Type)
}
func resultToFloat(result gjson.Result) (value interface{}, err error) {
if result.Type == gjson.Number {
return float32(result.Float()), nil
}
return nil, fmt.Errorf("result is not float32 but %v", result.Type)
}
func resultToDouble(result gjson.Result) (value interface{}, err error) {
if result.Type == gjson.Number {
return result.Float(), nil
}
return nil, fmt.Errorf("result is not float64 but %v", result.Type)
}
func resultToBytes(result gjson.Result) (interface{}, error) {
if result.Type != gjson.JSON || !result.IsArray() {
return nil, fmt.Errorf("result is not byte array but %v", result.Type)
}
data := []byte{}
for i, r := range result.Array() {
if r.Type != gjson.Number {
return nil, fmt.Errorf("result[%v] is not byte but %v", i, r.Type)
}
value := r.Uint()
if value > math.MaxUint8 {
return nil, fmt.Errorf("byte overflow in result[%v]", i)
}
data = append(data, byte(value))
}
return data, nil
}
func resultToString(result gjson.Result) (value interface{}, err error) {
if result.Type == gjson.String {
return result.String(), nil
}
return nil, fmt.Errorf("result is not String but %v", result.Type)
}
func resultToUint8(result gjson.Result) (value interface{}, err error) {
if value, err = resultToUint64(result); err != nil {
return nil, err
}
if value.(uint64) > math.MaxUint8 {
return nil, fmt.Errorf("uint8 overflow")
}
return uint8(value.(uint64)), nil
}
func resultToUint16(result gjson.Result) (value interface{}, err error) {
if value, err = resultToUint64(result); err != nil {
return nil, err
}
if value.(uint64) > math.MaxUint16 {
return nil, fmt.Errorf("uint16 overflow")
}
return uint16(value.(uint64)), nil
}
func resultToUint32(result gjson.Result) (value interface{}, err error) {
if value, err = resultToUint64(result); err != nil {
return nil, err
}
if value.(uint64) > math.MaxUint32 {
return nil, fmt.Errorf("uint32 overflow")
}
return uint32(value.(uint64)), nil
}
func resultToUint64(result gjson.Result) (value interface{}, err error) {
if result.Type == gjson.Number {
return result.Uint(), nil
}
return nil, fmt.Errorf("result is not Number but %v", result.Type)
}
func resultToInt8(result gjson.Result) (value interface{}, err error) {
if value, err = resultToInt64(result); err != nil {
return nil, err
}
if value.(int64) < math.MinInt8 || value.(int64) > math.MaxInt8 {
return nil, fmt.Errorf("int8 overflow")
}
return int8(value.(int64)), nil
}
func resultToInt16(result gjson.Result) (value interface{}, err error) {
if value, err = resultToInt64(result); err != nil {
return nil, err
}
if value.(int64) < math.MinInt16 || value.(int64) > math.MaxInt16 {
return nil, fmt.Errorf("int16 overflow")
}
return int16(value.(int64)), nil
}
func stringToParquetValue(value interface{}, parquetType parquet.Type) (interface{}, error) {
switch parquetType {
case parquet.Type_INT96, parquet.Type_BYTE_ARRAY, parquet.Type_FIXED_LEN_BYTE_ARRAY:
return []byte(value.(string)), nil
}
return nil, fmt.Errorf("string cannot be converted to parquet type %v", parquetType)
}
func uint8ToParquetValue(value interface{}, parquetType parquet.Type) (interface{}, error) {
switch parquetType {
case parquet.Type_INT32:
return int32(value.(uint8)), nil
case parquet.Type_INT64:
return int64(value.(uint8)), nil
}
return nil, fmt.Errorf("uint8 cannot be converted to parquet type %v", parquetType)
}
func uint16ToParquetValue(value interface{}, parquetType parquet.Type) (interface{}, error) {
switch parquetType {
case parquet.Type_INT32:
return int32(value.(uint16)), nil
case parquet.Type_INT64:
return int64(value.(uint16)), nil
}
return nil, fmt.Errorf("uint16 cannot be converted to parquet type %v", parquetType)
}
func uint32ToParquetValue(value interface{}, parquetType parquet.Type) (interface{}, error) {
switch parquetType {
case parquet.Type_INT32:
return int32(value.(uint32)), nil
case parquet.Type_INT64:
return int64(value.(uint32)), nil
}
return nil, fmt.Errorf("uint32 cannot be converted to parquet type %v", parquetType)
}
func uint64ToParquetValue(value interface{}, parquetType parquet.Type) (interface{}, error) {
switch parquetType {
case parquet.Type_INT32:
return int32(value.(uint64)), nil
case parquet.Type_INT64:
return int64(value.(uint64)), nil
}
return nil, fmt.Errorf("uint64 cannot be converted to parquet type %v", parquetType)
}
func int8ToParquetValue(value interface{}, parquetType parquet.Type) (interface{}, error) {
switch parquetType {
case parquet.Type_INT32:
return int32(value.(int8)), nil
case parquet.Type_INT64:
return int64(value.(int8)), nil
}
return nil, fmt.Errorf("int8 cannot be converted to parquet type %v", parquetType)
}
func int16ToParquetValue(value interface{}, parquetType parquet.Type) (interface{}, error) {
switch parquetType {
case parquet.Type_INT32:
return int32(value.(int16)), nil
case parquet.Type_INT64:
return int64(value.(int16)), nil
}
return nil, fmt.Errorf("int16 cannot be converted to parquet type %v", parquetType)
}
func int32ToParquetValue(value interface{}, parquetType parquet.Type) (interface{}, error) {
switch parquetType {
case parquet.Type_INT32:
return value.(int32), nil
case parquet.Type_INT64:
return int64(value.(int32)), nil
}
return nil, fmt.Errorf("int32 cannot be converted to parquet type %v", parquetType)
}
func int64ToParquetValue(value interface{}, parquetType parquet.Type) (interface{}, error) {
switch parquetType {
case parquet.Type_INT32:
return int32(value.(int64)), nil
case parquet.Type_INT64:
return value.(int64), nil
}
return nil, fmt.Errorf("int64 cannot be converted to parquet type %v", parquetType)
}
func resultToParquetValueByConvertedValue(result gjson.Result, convertedType parquet.ConvertedType, parquetType parquet.Type) (value interface{}, err error) {
if result.Type == gjson.Null {
return nil, nil
}
switch convertedType {
case parquet.ConvertedType_UTF8:
if value, err = resultToString(result); err != nil {
return nil, err
}
return stringToParquetValue(value, parquetType)
case parquet.ConvertedType_UINT_8:
if value, err = resultToUint8(result); err != nil {
return nil, err
}
return uint8ToParquetValue(value, parquetType)
case parquet.ConvertedType_UINT_16:
if value, err = resultToUint16(result); err != nil {
return nil, err
}
return uint16ToParquetValue(value, parquetType)
case parquet.ConvertedType_UINT_32:
if value, err = resultToUint32(result); err != nil {
return nil, err
}
return uint32ToParquetValue(value, parquetType)
case parquet.ConvertedType_UINT_64:
if value, err = resultToUint64(result); err != nil {
return nil, err
}
return uint64ToParquetValue(value, parquetType)
case parquet.ConvertedType_INT_8:
if value, err = resultToInt8(result); err != nil {
return nil, err
}
return int8ToParquetValue(value, parquetType)
case parquet.ConvertedType_INT_16:
if value, err = resultToInt16(result); err != nil {
return nil, err
}
return int16ToParquetValue(value, parquetType)
case parquet.ConvertedType_INT_32:
if value, err = resultToInt32(result); err != nil {
return nil, err
}
return int32ToParquetValue(value, parquetType)
case parquet.ConvertedType_INT_64:
if value, err = resultToInt64(result); err != nil {
return nil, err
}
return int64ToParquetValue(value, parquetType)
}
return nil, fmt.Errorf("unsupported converted type %v", convertedType)
}
func resultToParquetValue(result gjson.Result, parquetType parquet.Type, convertedType *parquet.ConvertedType) (interface{}, error) {
if convertedType != nil {
return resultToParquetValueByConvertedValue(result, *convertedType, parquetType)
}
if result.Type == gjson.Null {
return nil, nil
}
switch parquetType {
case parquet.Type_BOOLEAN:
return resultToBool(result)
case parquet.Type_INT32:
return resultToInt32(result)
case parquet.Type_INT64:
return resultToInt64(result)
case parquet.Type_FLOAT:
return resultToFloat(result)
case parquet.Type_DOUBLE:
return resultToDouble(result)
case parquet.Type_INT96, parquet.Type_BYTE_ARRAY, parquet.Type_FIXED_LEN_BYTE_ARRAY:
return resultToBytes(result)
}
return nil, fmt.Errorf("unknown parquet type %v", parquetType)
}
func resultToArray(result gjson.Result) ([]gjson.Result, error) {
if result.Type == gjson.Null {
return nil, nil
}
if result.Type != gjson.JSON || !result.IsArray() {
return nil, fmt.Errorf("result is not Array but %v", result.Type)
}
return result.Array(), nil
}

View file

@ -0,0 +1,490 @@
/*
* Minio Cloud Storage, (C) 2018 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"bytes"
"fmt"
"math"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
func i64sToi32s(i64s []int64) (i32s []int32) {
i32s = make([]int32, len(i64s))
for i := range i64s {
i32s[i] = int32(i64s[i])
}
return i32s
}
func readBitPacked(reader *bytes.Reader, header, bitWidth uint64) (result []int64, err error) {
count := header * 8
if count == 0 {
return result, nil
}
if bitWidth == 0 {
return make([]int64, count), nil
}
data := make([]byte, header*bitWidth)
if _, err = reader.Read(data); err != nil {
return nil, err
}
var val, used, left, b uint64
valNeedBits := bitWidth
i := -1
for {
if left <= 0 {
i++
if i >= len(data) {
break
}
b = uint64(data[i])
left = 8
used = 0
}
if left >= valNeedBits {
val |= ((b >> used) & ((1 << valNeedBits) - 1)) << (bitWidth - valNeedBits)
result = append(result, int64(val))
val = 0
left -= valNeedBits
used += valNeedBits
valNeedBits = bitWidth
} else {
val |= (b >> used) << (bitWidth - valNeedBits)
valNeedBits -= left
left = 0
}
}
return result, nil
}
func readBools(reader *bytes.Reader, count uint64) (result []bool, err error) {
i64s, err := readBitPacked(reader, count, 1)
if err != nil {
return nil, err
}
var i uint64
for i = 0; i < count; i++ {
result = append(result, i64s[i] > 0)
}
return result, nil
}
func readInt32s(reader *bytes.Reader, count uint64) (result []int32, err error) {
buf := make([]byte, 4)
var i uint64
for i = 0; i < count; i++ {
if _, err = reader.Read(buf); err != nil {
return nil, err
}
result = append(result, int32(bytesToUint32(buf)))
}
return result, nil
}
func readInt64s(reader *bytes.Reader, count uint64) (result []int64, err error) {
buf := make([]byte, 8)
var i uint64
for i = 0; i < count; i++ {
if _, err = reader.Read(buf); err != nil {
return nil, err
}
result = append(result, int64(bytesToUint64(buf)))
}
return result, nil
}
func readInt96s(reader *bytes.Reader, count uint64) (result [][]byte, err error) {
var i uint64
for i = 0; i < count; i++ {
buf := make([]byte, 12)
if _, err = reader.Read(buf); err != nil {
return nil, err
}
result = append(result, buf)
}
return result, nil
}
func readFloats(reader *bytes.Reader, count uint64) (result []float32, err error) {
buf := make([]byte, 4)
var i uint64
for i = 0; i < count; i++ {
if _, err = reader.Read(buf); err != nil {
return nil, err
}
result = append(result, math.Float32frombits(bytesToUint32(buf)))
}
return result, nil
}
func readDoubles(reader *bytes.Reader, count uint64) (result []float64, err error) {
buf := make([]byte, 8)
var i uint64
for i = 0; i < count; i++ {
if _, err = reader.Read(buf); err != nil {
return nil, err
}
result = append(result, math.Float64frombits(bytesToUint64(buf)))
}
return result, nil
}
func readByteArrays(reader *bytes.Reader, count uint64) (result [][]byte, err error) {
buf := make([]byte, 4)
var length uint32
var data []byte
var i uint64
for i = 0; i < count; i++ {
if _, err = reader.Read(buf); err != nil {
return nil, err
}
length = bytesToUint32(buf)
data = make([]byte, length)
if length > 0 {
if _, err = reader.Read(data); err != nil {
return nil, err
}
}
result = append(result, data)
}
return result, nil
}
func readFixedLenByteArrays(reader *bytes.Reader, count, length uint64) (result [][]byte, err error) {
var i uint64
for i = 0; i < count; i++ {
data := make([]byte, length)
if _, err = reader.Read(data); err != nil {
return nil, err
}
result = append(result, data)
}
return result, nil
}
func readValues(reader *bytes.Reader, dataType parquet.Type, count, length uint64) (interface{}, error) {
switch dataType {
case parquet.Type_BOOLEAN:
return readBools(reader, count)
case parquet.Type_INT32:
return readInt32s(reader, count)
case parquet.Type_INT64:
return readInt64s(reader, count)
case parquet.Type_INT96:
return readInt96s(reader, count)
case parquet.Type_FLOAT:
return readFloats(reader, count)
case parquet.Type_DOUBLE:
return readDoubles(reader, count)
case parquet.Type_BYTE_ARRAY:
return readByteArrays(reader, count)
case parquet.Type_FIXED_LEN_BYTE_ARRAY:
return readFixedLenByteArrays(reader, count, length)
}
return nil, fmt.Errorf("unknown parquet type %v", dataType)
}
func readUnsignedVarInt(reader *bytes.Reader) (v uint64, err error) {
var b byte
var shift uint64
for {
if b, err = reader.ReadByte(); err != nil {
return 0, err
}
if v |= ((uint64(b) & 0x7F) << shift); b&0x80 == 0 {
break
}
shift += 7
}
return v, nil
}
func readRLE(reader *bytes.Reader, header, bitWidth uint64) (result []int64, err error) {
width := (bitWidth + 7) / 8
data := make([]byte, width)
if width > 0 {
if _, err = reader.Read(data); err != nil {
return nil, err
}
}
if width < 4 {
data = append(data, make([]byte, 4-width)...)
}
val := int64(bytesToUint32(data))
count := header >> 1
result = make([]int64, count)
for i := range result {
result[i] = val
}
return result, nil
}
func readRLEBitPackedHybrid(reader *bytes.Reader, length, bitWidth uint64) (result []int64, err error) {
if length <= 0 {
var i32s []int32
i32s, err = readInt32s(reader, 1)
if err != nil {
return nil, err
}
length = uint64(i32s[0])
}
buf := make([]byte, length)
if _, err = reader.Read(buf); err != nil {
return nil, err
}
reader = bytes.NewReader(buf)
for reader.Len() > 0 {
header, err := readUnsignedVarInt(reader)
if err != nil {
return nil, err
}
var i64s []int64
if header&1 == 0 {
i64s, err = readRLE(reader, header, bitWidth)
} else {
i64s, err = readBitPacked(reader, header>>1, bitWidth)
}
if err != nil {
return nil, err
}
result = append(result, i64s...)
}
return result, nil
}
func readDeltaBinaryPackedInt(reader *bytes.Reader) (result []int64, err error) {
blockSize, err := readUnsignedVarInt(reader)
if err != nil {
return nil, err
}
numMiniblocksInBlock, err := readUnsignedVarInt(reader)
if err != nil {
return nil, err
}
numValues, err := readUnsignedVarInt(reader)
if err != nil {
return nil, err
}
firstValueZigZag, err := readUnsignedVarInt(reader)
if err != nil {
return nil, err
}
v := int64(firstValueZigZag>>1) ^ (-int64(firstValueZigZag & 1))
result = append(result, v)
numValuesInMiniBlock := blockSize / numMiniblocksInBlock
bitWidths := make([]uint64, numMiniblocksInBlock)
for uint64(len(result)) < numValues {
minDeltaZigZag, err := readUnsignedVarInt(reader)
if err != nil {
return nil, err
}
for i := 0; uint64(i) < numMiniblocksInBlock; i++ {
b, err := reader.ReadByte()
if err != nil {
return nil, err
}
bitWidths[i] = uint64(b)
}
minDelta := int64(minDeltaZigZag>>1) ^ (-int64(minDeltaZigZag & 1))
for i := 0; uint64(i) < numMiniblocksInBlock; i++ {
i64s, err := readBitPacked(reader, numValuesInMiniBlock/8, bitWidths[i])
if err != nil {
return nil, err
}
for j := range i64s {
v += i64s[j] + minDelta
result = append(result, v)
}
}
}
return result[:numValues], nil
}
func readDeltaLengthByteArrays(reader *bytes.Reader) (result [][]byte, err error) {
i64s, err := readDeltaBinaryPackedInt(reader)
if err != nil {
return nil, err
}
for i := 0; i < len(i64s); i++ {
arrays, err := readFixedLenByteArrays(reader, 1, uint64(i64s[i]))
if err != nil {
return nil, err
}
result = append(result, arrays[0])
}
return result, nil
}
func readDeltaByteArrays(reader *bytes.Reader) (result [][]byte, err error) {
i64s, err := readDeltaBinaryPackedInt(reader)
if err != nil {
return nil, err
}
suffixes, err := readDeltaLengthByteArrays(reader)
if err != nil {
return nil, err
}
result = append(result, suffixes[0])
for i := 1; i < len(i64s); i++ {
prefixLength := i64s[i]
val := append([]byte{}, result[i-1][:prefixLength]...)
val = append(val, suffixes[i]...)
result = append(result, val)
}
return result, nil
}
func readDataPageValues(
bytesReader *bytes.Reader,
encoding parquet.Encoding,
dataType parquet.Type,
convertedType parquet.ConvertedType,
count, bitWidth uint64,
) (result interface{}, resultDataType parquet.Type, err error) {
switch encoding {
case parquet.Encoding_PLAIN:
result, err = readValues(bytesReader, dataType, count, bitWidth)
return result, dataType, err
case parquet.Encoding_PLAIN_DICTIONARY:
b, err := bytesReader.ReadByte()
if err != nil {
return nil, -1, err
}
i64s, err := readRLEBitPackedHybrid(bytesReader, uint64(bytesReader.Len()), uint64(b))
if err != nil {
return nil, -1, err
}
return i64s[:count], parquet.Type_INT64, nil
case parquet.Encoding_RLE:
i64s, err := readRLEBitPackedHybrid(bytesReader, 0, bitWidth)
if err != nil {
return nil, -1, err
}
i64s = i64s[:count]
if dataType == parquet.Type_INT32 {
return i64sToi32s(i64s), parquet.Type_INT32, nil
}
return i64s, parquet.Type_INT64, nil
case parquet.Encoding_BIT_PACKED:
return nil, -1, fmt.Errorf("deprecated parquet encoding %v", parquet.Encoding_BIT_PACKED)
case parquet.Encoding_DELTA_BINARY_PACKED:
i64s, err := readDeltaBinaryPackedInt(bytesReader)
if err != nil {
return nil, -1, err
}
i64s = i64s[:count]
if dataType == parquet.Type_INT32 {
return i64sToi32s(i64s), parquet.Type_INT32, nil
}
return i64s, parquet.Type_INT64, nil
case parquet.Encoding_DELTA_LENGTH_BYTE_ARRAY:
byteSlices, err := readDeltaLengthByteArrays(bytesReader)
if err != nil {
return nil, -1, err
}
return byteSlices[:count], parquet.Type_FIXED_LEN_BYTE_ARRAY, nil
case parquet.Encoding_DELTA_BYTE_ARRAY:
byteSlices, err := readDeltaByteArrays(bytesReader)
if err != nil {
return nil, -1, err
}
return byteSlices[:count], parquet.Type_FIXED_LEN_BYTE_ARRAY, nil
}
return nil, -1, fmt.Errorf("unsupported parquet encoding %v", encoding)
}

View file

@ -0,0 +1,450 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"math"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
func boolsToBytes(bs []bool) []byte {
size := (len(bs) + 7) / 8
result := make([]byte, size)
for i := range bs {
if bs[i] {
result[i/8] |= 1 << uint32(i%8)
}
}
return result
}
func int32sToBytes(i32s []int32) []byte {
buf := make([]byte, 4*len(i32s))
for i, i32 := range i32s {
binary.LittleEndian.PutUint32(buf[i*4:], uint32(i32))
}
return buf
}
func int64sToBytes(i64s []int64) []byte {
buf := make([]byte, 8*len(i64s))
for i, i64 := range i64s {
binary.LittleEndian.PutUint64(buf[i*8:], uint64(i64))
}
return buf
}
func float32sToBytes(f32s []float32) []byte {
buf := make([]byte, 4*len(f32s))
for i, f32 := range f32s {
binary.LittleEndian.PutUint32(buf[i*4:], math.Float32bits(f32))
}
return buf
}
func float64sToBytes(f64s []float64) []byte {
buf := make([]byte, 8*len(f64s))
for i, f64 := range f64s {
binary.LittleEndian.PutUint64(buf[i*8:], math.Float64bits(f64))
}
return buf
}
func byteSlicesToBytes(byteSlices [][]byte) []byte {
buf := new(bytes.Buffer)
for _, s := range byteSlices {
if err := binary.Write(buf, binary.LittleEndian, uint32(len(s))); err != nil {
panic(err)
}
if _, err := buf.Write(s); err != nil {
panic(err)
}
}
return buf.Bytes()
}
func byteArraysToBytes(arrayList [][]byte) []byte {
buf := new(bytes.Buffer)
arrayLen := -1
for _, array := range arrayList {
if arrayLen != -1 && len(array) != arrayLen {
panic(errors.New("array list does not have same length"))
}
arrayLen = len(array)
if _, err := buf.Write(array); err != nil {
panic(err)
}
}
return buf.Bytes()
}
func int96sToBytes(i96s [][]byte) []byte {
return byteArraysToBytes(i96s)
}
func valuesToBytes(values interface{}, dataType parquet.Type) []byte {
switch dataType {
case parquet.Type_BOOLEAN:
return boolsToBytes(values.([]bool))
case parquet.Type_INT32:
return int32sToBytes(values.([]int32))
case parquet.Type_INT64:
return int64sToBytes(values.([]int64))
case parquet.Type_INT96:
return int96sToBytes(values.([][]byte))
case parquet.Type_FLOAT:
return float32sToBytes(values.([]float32))
case parquet.Type_DOUBLE:
return float64sToBytes(values.([]float64))
case parquet.Type_BYTE_ARRAY:
return byteSlicesToBytes(values.([][]byte))
case parquet.Type_FIXED_LEN_BYTE_ARRAY:
return byteArraysToBytes(values.([][]byte))
}
return []byte{}
}
func valueToBytes(value interface{}, dataType parquet.Type) []byte {
var values interface{}
switch dataType {
case parquet.Type_BOOLEAN:
values = []bool{value.(bool)}
case parquet.Type_INT32:
values = []int32{value.(int32)}
case parquet.Type_INT64:
values = []int64{value.(int64)}
case parquet.Type_INT96:
values = [][]byte{value.([]byte)}
case parquet.Type_FLOAT:
values = []float32{value.(float32)}
case parquet.Type_DOUBLE:
values = []float64{value.(float64)}
case parquet.Type_BYTE_ARRAY, parquet.Type_FIXED_LEN_BYTE_ARRAY:
values = [][]byte{value.([]byte)}
}
return valuesToBytes(values, dataType)
}
func unsignedVarIntToBytes(ui64 uint64) []byte {
size := (getBitWidth(ui64) + 6) / 7
if size == 0 {
return []byte{0}
}
buf := make([]byte, size)
for i := uint64(0); i < size; i++ {
buf[i] = byte(ui64&0x7F) | 0x80
ui64 >>= 7
}
buf[size-1] &= 0x7F
return buf
}
func valuesToRLEBytes(values interface{}, bitWidth int32, valueType parquet.Type) []byte {
vals := valuesToInterfaces(values, valueType)
result := []byte{}
j := 0
for i := 0; i < len(vals); i = j {
for j = i + 1; j < len(vals) && vals[i] == vals[j]; j++ {
}
headerBytes := unsignedVarIntToBytes(uint64((j - i) << 1))
result = append(result, headerBytes...)
valBytes := valueToBytes(vals[i], valueType)
byteCount := (bitWidth + 7) / 8
result = append(result, valBytes[:byteCount]...)
}
return result
}
func valuesToRLEBitPackedHybridBytes(values interface{}, bitWidth int32, dataType parquet.Type) []byte {
rleBytes := valuesToRLEBytes(values, bitWidth, dataType)
lenBytes := valueToBytes(int32(len(rleBytes)), parquet.Type_INT32)
return append(lenBytes, rleBytes...)
}
func valuesToBitPackedBytes(values interface{}, bitWidth int64, withHeader bool, dataType parquet.Type) []byte {
var i64s []int64
switch dataType {
case parquet.Type_BOOLEAN:
bs := values.([]bool)
i64s = make([]int64, len(bs))
for i := range bs {
if bs[i] {
i64s[i] = 1
}
}
case parquet.Type_INT32:
i32s := values.([]int32)
i64s = make([]int64, len(i32s))
for i := range i32s {
i64s[i] = int64(i32s[i])
}
case parquet.Type_INT64:
i64s = values.([]int64)
default:
panic(fmt.Errorf("data type %v is not supported for bit packing", dataType))
}
if len(i64s) == 0 {
return nil
}
var valueByte byte
bitsSet := uint64(0)
bitsNeeded := uint64(8)
bitsToSet := uint64(bitWidth)
value := i64s[0]
valueBytes := []byte{}
for i := 0; i < len(i64s); {
if bitsToSet >= bitsNeeded {
valueByte |= byte(((value >> bitsSet) & ((1 << bitsNeeded) - 1)) << (8 - bitsNeeded))
valueBytes = append(valueBytes, valueByte)
bitsToSet -= bitsNeeded
bitsSet += bitsNeeded
bitsNeeded = 8
valueByte = 0
if bitsToSet <= 0 && (i+1) < len(i64s) {
i++
value = i64s[i]
bitsToSet = uint64(bitWidth)
bitsSet = 0
}
} else {
valueByte |= byte((value >> bitsSet) << (8 - bitsNeeded))
i++
if i < len(i64s) {
value = i64s[i]
}
bitsNeeded -= bitsToSet
bitsToSet = uint64(bitWidth)
bitsSet = 0
}
}
if withHeader {
header := uint64(((len(i64s) / 8) << 1) | 1)
headerBytes := unsignedVarIntToBytes(header)
return append(headerBytes, valueBytes...)
}
return valueBytes
}
const (
blockSize = 128
subBlockSize = 32
subBlockCount = blockSize / subBlockSize
)
var (
blockSizeBytes = unsignedVarIntToBytes(blockSize)
subBlockCountBytes = unsignedVarIntToBytes(subBlockCount)
)
func int32ToDeltaBytes(i32s []int32) []byte {
getValue := func(i32 int32) uint64 {
return uint64((i32 >> 31) ^ (i32 << 1))
}
result := append([]byte{}, blockSizeBytes...)
result = append(result, subBlockCountBytes...)
result = append(result, unsignedVarIntToBytes(uint64(len(i32s)))...)
result = append(result, unsignedVarIntToBytes(getValue(i32s[0]))...)
for i := 1; i < len(i32s); {
block := []int32{}
minDelta := int32(0x7FFFFFFF)
for ; i < len(i32s) && len(block) < blockSize; i++ {
delta := i32s[i] - i32s[i-1]
block = append(block, delta)
if delta < minDelta {
minDelta = delta
}
}
for len(block) < blockSize {
block = append(block, minDelta)
}
bitWidths := make([]byte, subBlockCount)
for j := 0; j < subBlockCount; j++ {
maxValue := int32(0)
for k := j * subBlockSize; k < (j+1)*subBlockSize; k++ {
block[k] -= minDelta
if block[k] > maxValue {
maxValue = block[k]
}
}
bitWidths[j] = byte(getBitWidth(uint64(maxValue)))
}
minDeltaZigZag := getValue(minDelta)
result = append(result, unsignedVarIntToBytes(minDeltaZigZag)...)
result = append(result, bitWidths...)
for j := 0; j < subBlockCount; j++ {
bitPacked := valuesToBitPackedBytes(
block[j*subBlockSize:(j+1)*subBlockSize],
int64(bitWidths[j]),
false,
parquet.Type_INT32,
)
result = append(result, bitPacked...)
}
}
return result
}
func int64ToDeltaBytes(i64s []int64) []byte {
getValue := func(i64 int64) uint64 {
return uint64((i64 >> 63) ^ (i64 << 1))
}
result := append([]byte{}, blockSizeBytes...)
result = append(result, subBlockCountBytes...)
result = append(result, unsignedVarIntToBytes(uint64(len(i64s)))...)
result = append(result, unsignedVarIntToBytes(getValue(i64s[0]))...)
for i := 1; i < len(i64s); {
block := []int64{}
minDelta := int64(0x7FFFFFFFFFFFFFFF)
for ; i < len(i64s) && len(block) < blockSize; i++ {
delta := i64s[i] - i64s[i-1]
block = append(block, delta)
if delta < minDelta {
minDelta = delta
}
}
for len(block) < blockSize {
block = append(block, minDelta)
}
bitWidths := make([]byte, subBlockCount)
for j := 0; j < subBlockCount; j++ {
maxValue := int64(0)
for k := j * subBlockSize; k < (j+1)*subBlockSize; k++ {
block[k] -= minDelta
if block[k] > maxValue {
maxValue = block[k]
}
}
bitWidths[j] = byte(getBitWidth(uint64(maxValue)))
}
minDeltaZigZag := getValue(minDelta)
result = append(result, unsignedVarIntToBytes(minDeltaZigZag)...)
result = append(result, bitWidths...)
for j := 0; j < subBlockCount; j++ {
bitPacked := valuesToBitPackedBytes(
block[j*subBlockSize:(j+1)*subBlockSize],
int64(bitWidths[j]),
false,
parquet.Type_INT64,
)
result = append(result, bitPacked...)
}
}
return result
}
func valuesToDeltaBytes(values interface{}, dataType parquet.Type) []byte {
switch dataType {
case parquet.Type_INT32:
return int32ToDeltaBytes(values.([]int32))
case parquet.Type_INT64:
return int64ToDeltaBytes(values.([]int64))
}
return nil
}
func stringsToDeltaLengthByteArrayBytes(strs []string) []byte {
lengths := make([]int32, len(strs))
for i, s := range strs {
lengths[i] = int32(len(s))
}
result := int32ToDeltaBytes(lengths)
for _, s := range strs {
result = append(result, []byte(s)...)
}
return result
}
func stringsToDeltaByteArrayBytes(strs []string) []byte {
prefixLengths := make([]int32, len(strs))
suffixes := make([]string, len(strs))
var i, j int
for i = 1; i < len(strs); i++ {
for j = 0; j < len(strs[i-1]) && j < len(strs[i]); j++ {
if strs[i-1][j] != strs[i][j] {
break
}
}
prefixLengths[i] = int32(j)
suffixes[i] = strs[i][j:]
}
result := int32ToDeltaBytes(prefixLengths)
return append(result, stringsToDeltaLengthByteArrayBytes(suffixes)...)
}
func encodeValues(values interface{}, dataType parquet.Type, encoding parquet.Encoding, bitWidth int32) []byte {
switch encoding {
case parquet.Encoding_RLE:
return valuesToRLEBitPackedHybridBytes(values, bitWidth, dataType)
case parquet.Encoding_DELTA_BINARY_PACKED:
return valuesToDeltaBytes(values, dataType)
case parquet.Encoding_DELTA_BYTE_ARRAY:
return stringsToDeltaByteArrayBytes(values.([]string))
case parquet.Encoding_DELTA_LENGTH_BYTE_ARRAY:
return stringsToDeltaLengthByteArrayBytes(values.([]string))
}
return valuesToBytes(values, dataType)
}

View file

@ -0,0 +1,189 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"math"
"reflect"
"testing"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
func TestBoolsToBytes(t *testing.T) {
testCases := []struct {
bs []bool
expectedResult []byte
}{
{nil, []byte{}},
{[]bool{}, []byte{}},
{[]bool{true}, []byte{1}},
{[]bool{false}, []byte{0}},
{[]bool{true, true}, []byte{3}},
{[]bool{false, false}, []byte{0}},
{[]bool{false, true}, []byte{2}},
{[]bool{true, false}, []byte{1}},
{[]bool{false, false, false, false, false, false, false, true, true}, []byte{128, 1}},
}
for i, testCase := range testCases {
result := boolsToBytes(testCase.bs)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
func TestInt32sToBytes(t *testing.T) {
testCases := []struct {
i32s []int32
expectedResult []byte
}{
{nil, []byte{}},
{[]int32{}, []byte{}},
{[]int32{1}, []byte{1, 0, 0, 0}},
{[]int32{-1}, []byte{255, 255, 255, 255}},
{[]int32{256}, []byte{0, 1, 0, 0}},
{[]int32{math.MinInt32}, []byte{0, 0, 0, 128}},
{[]int32{math.MaxInt32}, []byte{255, 255, 255, 127}},
{[]int32{257, -2}, []byte{1, 1, 0, 0, 254, 255, 255, 255}},
}
for i, testCase := range testCases {
result := int32sToBytes(testCase.i32s)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
func TestInt64sToBytes(t *testing.T) {
testCases := []struct {
i64s []int64
expectedResult []byte
}{
{nil, []byte{}},
{[]int64{}, []byte{}},
{[]int64{1}, []byte{1, 0, 0, 0, 0, 0, 0, 0}},
{[]int64{-1}, []byte{255, 255, 255, 255, 255, 255, 255, 255}},
{[]int64{256}, []byte{0, 1, 0, 0, 0, 0, 0, 0}},
{[]int64{math.MinInt64}, []byte{0, 0, 0, 0, 0, 0, 0, 128}},
{[]int64{math.MaxInt64}, []byte{255, 255, 255, 255, 255, 255, 255, 127}},
{[]int64{257, -2}, []byte{1, 1, 0, 0, 0, 0, 0, 0, 254, 255, 255, 255, 255, 255, 255, 255}},
}
for i, testCase := range testCases {
result := int64sToBytes(testCase.i64s)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
func TestFloat32sToBytes(t *testing.T) {
testCases := []struct {
f32s []float32
expectedResult []byte
}{
{nil, []byte{}},
{[]float32{}, []byte{}},
{[]float32{1}, []byte{0, 0, 128, 63}},
{[]float32{1.0}, []byte{0, 0, 128, 63}},
{[]float32{-1}, []byte{0, 0, 128, 191}},
{[]float32{-1.0}, []byte{0, 0, 128, 191}},
{[]float32{256}, []byte{0, 0, 128, 67}},
{[]float32{1.1}, []byte{205, 204, 140, 63}},
{[]float32{-1.1}, []byte{205, 204, 140, 191}},
{[]float32{math.Pi}, []byte{219, 15, 73, 64}},
{[]float32{257, -2}, []byte{0, 128, 128, 67, 0, 0, 0, 192}},
{[]float32{257.1, -2.1}, []byte{205, 140, 128, 67, 102, 102, 6, 192}},
}
for i, testCase := range testCases {
result := float32sToBytes(testCase.f32s)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
func TestFloat64sToBytes(t *testing.T) {
testCases := []struct {
f64s []float64
expectedResult []byte
}{
{nil, []byte{}},
{[]float64{}, []byte{}},
{[]float64{1}, []byte{0, 0, 0, 0, 0, 0, 240, 63}},
{[]float64{1.0}, []byte{0, 0, 0, 0, 0, 0, 240, 63}},
{[]float64{-1}, []byte{0, 0, 0, 0, 0, 0, 240, 191}},
{[]float64{-1.0}, []byte{0, 0, 0, 0, 0, 0, 240, 191}},
{[]float64{256}, []byte{0, 0, 0, 0, 0, 0, 112, 64}},
{[]float64{1.1}, []byte{154, 153, 153, 153, 153, 153, 241, 63}},
{[]float64{-1.1}, []byte{154, 153, 153, 153, 153, 153, 241, 191}},
{[]float64{math.Pi}, []byte{24, 45, 68, 84, 251, 33, 9, 64}},
{[]float64{257, -2}, []byte{0, 0, 0, 0, 0, 16, 112, 64, 0, 0, 0, 0, 0, 0, 0, 192}},
{[]float64{257.1, -2.1}, []byte{154, 153, 153, 153, 153, 17, 112, 64, 205, 204, 204, 204, 204, 204, 0, 192}},
}
for i, testCase := range testCases {
result := float64sToBytes(testCase.f64s)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
func TestUnsignedVarIntToBytes(t *testing.T) {
testCases := []struct {
ui64 uint64
expectedResult []byte
}{
{0, []byte{0}},
{1, []byte{1}},
{0x7F, []byte{127}},
{0x80, []byte{128, 1}},
{uint64(math.MaxUint64), []byte{255, 255, 255, 255, 255, 255, 255, 255, 255, 1}},
}
for i, testCase := range testCases {
result := unsignedVarIntToBytes(testCase.ui64)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
func TestValuesToRLEBytes(t *testing.T) {
testCases := []struct {
values interface{}
bitWidth int32
dataType parquet.Type
expectedResult []byte
}{
{[]int32{3, 5, 7}, 1, parquet.Type_INT32, []byte{2, 3, 2, 5, 2, 7}},
{[]int32{3, 3, 3}, 1, parquet.Type_INT32, []byte{6, 3}},
{[]int32{2, 2, 3, 3, 3}, 1, parquet.Type_INT32, []byte{4, 2, 6, 3}},
}
for i, testCase := range testCases {
result := valuesToRLEBytes(testCase.values, testCase.bitWidth, testCase.dataType)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}

View file

@ -0,0 +1,38 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package encoding
import (
"github.com/minio/minio/pkg/s3select/internal/parquet-go/common"
)
// Refer https://en.wikipedia.org/wiki/LEB128#Unsigned_LEB128
func varIntEncode(ui64 uint64) []byte {
if ui64 == 0 {
return []byte{0}
}
length := int(common.BitWidth(ui64)+6) / 7
data := make([]byte, length)
for i := 0; i < length; i++ {
data[i] = byte(ui64&0x7F) | 0x80
ui64 >>= 7
}
data[length-1] &= 0x7F
return data
}

View file

@ -0,0 +1,43 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package encoding
import (
"math"
"reflect"
"testing"
)
func TestVarIntToBytes(t *testing.T) {
testCases := []struct {
ui64 uint64
expectedResult []byte
}{
{0, []byte{0}},
{1, []byte{1}},
{0x7F, []byte{127}},
{0x80, []byte{128, 1}},
{uint64(math.MaxUint64), []byte{255, 255, 255, 255, 255, 255, 255, 255, 255, 1}},
}
for i, testCase := range testCases {
result := varIntEncode(testCase.ui64)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}

View file

@ -0,0 +1,296 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package encoding
import (
"fmt"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/common"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
const (
blockSize = 128
miniBlockSize = 32
miniBlockCount = blockSize / miniBlockSize
)
var deltaEncodeHeaderBytes []byte
func init() {
deltaEncodeHeaderBytes = varIntEncode(blockSize)
deltaEncodeHeaderBytes = append(deltaEncodeHeaderBytes, varIntEncode(miniBlockCount)...)
}
// Supported Types: BOOLEAN, INT32, INT64
func bitPackedEncode(values interface{}, bitWidth uint64, withHeader bool, parquetType parquet.Type) []byte {
var i64s []int64
switch parquetType {
case parquet.Type_BOOLEAN:
bs, ok := values.([]bool)
if !ok {
panic(fmt.Errorf("expected slice of bool"))
}
i64s = make([]int64, len(bs))
for i := range bs {
if bs[i] {
i64s[i] = 1
}
}
case parquet.Type_INT32:
i32s, ok := values.([]int32)
if !ok {
panic(fmt.Errorf("expected slice of int32"))
}
for i := range i32s {
i64s[i] = int64(i32s[i])
}
case parquet.Type_INT64:
var ok bool
i64s, ok = values.([]int64)
if !ok {
panic(fmt.Errorf("expected slice of int64"))
}
default:
panic(fmt.Errorf("%v parquet type unsupported", parquetType))
}
if len(i64s) == 0 {
return nil
}
var valueByte byte
bitsSet := uint64(0)
bitsNeeded := uint64(8)
bitsToSet := bitWidth
value := i64s[0]
valueBytes := []byte{}
for i := 0; i < len(i64s); {
if bitsToSet >= bitsNeeded {
valueByte |= byte(((value >> bitsSet) & ((1 << bitsNeeded) - 1)) << (8 - bitsNeeded))
valueBytes = append(valueBytes, valueByte)
bitsToSet -= bitsNeeded
bitsSet += bitsNeeded
bitsNeeded = 8
valueByte = 0
if bitsToSet <= 0 && (i+1) < len(i64s) {
i++
value = i64s[i]
bitsToSet = bitWidth
bitsSet = 0
}
} else {
valueByte |= byte((value >> bitsSet) << (8 - bitsNeeded))
i++
if i < len(i64s) {
value = i64s[i]
}
bitsNeeded -= bitsToSet
bitsToSet = bitWidth
bitsSet = 0
}
}
if withHeader {
header := uint64(((len(i64s) / 8) << 1) | 1)
headerBytes := varIntEncode(header)
return append(headerBytes, valueBytes...)
}
return valueBytes
}
func deltaEncodeInt32s(i32s []int32) (data []byte) {
getValue := func(i32 int32) uint64 {
return uint64((i32 >> 31) ^ (i32 << 1))
}
data = append(data, deltaEncodeHeaderBytes...)
data = append(data, varIntEncode(uint64(len(i32s)))...)
data = append(data, varIntEncode(getValue(i32s[0]))...)
for i := 1; i < len(i32s); {
block := []int32{}
minDelta := int32(0x7FFFFFFF)
for ; i < len(i32s) && len(block) < blockSize; i++ {
delta := i32s[i] - i32s[i-1]
block = append(block, delta)
if delta < minDelta {
minDelta = delta
}
}
for len(block) < blockSize {
block = append(block, minDelta)
}
bitWidths := make([]byte, miniBlockCount)
for j := 0; j < miniBlockCount; j++ {
maxValue := int32(0)
for k := j * miniBlockSize; k < (j+1)*miniBlockSize; k++ {
block[k] -= minDelta
if block[k] > maxValue {
maxValue = block[k]
}
}
bitWidths[j] = byte(common.BitWidth(uint64(maxValue)))
}
minDeltaZigZag := getValue(minDelta)
data = append(data, varIntEncode(minDeltaZigZag)...)
data = append(data, bitWidths...)
for j := 0; j < miniBlockCount; j++ {
bitPacked := bitPackedEncode(
block[j*miniBlockSize:(j+1)*miniBlockSize],
uint64(bitWidths[j]),
false,
parquet.Type_INT32,
)
data = append(data, bitPacked...)
}
}
return data
}
func deltaEncodeInt64s(i64s []int64) (data []byte) {
getValue := func(i64 int64) uint64 {
return uint64((i64 >> 63) ^ (i64 << 1))
}
data = append(data, deltaEncodeHeaderBytes...)
data = append(data, varIntEncode(uint64(len(i64s)))...)
data = append(data, varIntEncode(getValue(i64s[0]))...)
for i := 1; i < len(i64s); {
block := []int64{}
minDelta := int64(0x7FFFFFFFFFFFFFFF)
for ; i < len(i64s) && len(block) < blockSize; i++ {
delta := i64s[i] - i64s[i-1]
block = append(block, delta)
if delta < minDelta {
minDelta = delta
}
}
for len(block) < blockSize {
block = append(block, minDelta)
}
bitWidths := make([]byte, miniBlockCount)
for j := 0; j < miniBlockCount; j++ {
maxValue := int64(0)
for k := j * miniBlockSize; k < (j+1)*miniBlockSize; k++ {
block[k] -= minDelta
if block[k] > maxValue {
maxValue = block[k]
}
}
bitWidths[j] = byte(common.BitWidth(uint64(maxValue)))
}
minDeltaZigZag := getValue(minDelta)
data = append(data, varIntEncode(minDeltaZigZag)...)
data = append(data, bitWidths...)
for j := 0; j < miniBlockCount; j++ {
bitPacked := bitPackedEncode(
block[j*miniBlockSize:(j+1)*miniBlockSize],
uint64(bitWidths[j]),
false,
parquet.Type_INT64,
)
data = append(data, bitPacked...)
}
}
return data
}
// DeltaEncode encodes values specified in https://github.com/apache/parquet-format/blob/master/Encodings.md#delta-encoding-delta_binary_packed--5
//
// Supported Types: INT32, INT64.
func DeltaEncode(values interface{}, parquetType parquet.Type) []byte {
switch parquetType {
case parquet.Type_INT32:
i32s, ok := values.([]int32)
if !ok {
panic(fmt.Errorf("expected slice of int32"))
}
return deltaEncodeInt32s(i32s)
case parquet.Type_INT64:
i64s, ok := values.([]int64)
if !ok {
panic(fmt.Errorf("expected slice of int64"))
}
return deltaEncodeInt64s(i64s)
}
panic(fmt.Errorf("%v parquet type unsupported", parquetType))
}
// DeltaLengthByteArrayEncode encodes bytes slices specified in https://github.com/apache/parquet-format/blob/master/Encodings.md#delta-length-byte-array-delta_length_byte_array--6
//
// Supported Types: BYTE_ARRAY
func DeltaLengthByteArrayEncode(bytesSlices [][]byte) (data []byte) {
lengths := make([]int32, len(bytesSlices))
for i, bytes := range bytesSlices {
lengths[i] = int32(len(bytes))
}
data = deltaEncodeInt32s(lengths)
for _, bytes := range bytesSlices {
data = append(data, []byte(bytes)...)
}
return data
}
// DeltaByteArrayEncode encodes sequence of strings values specified in https://github.com/apache/parquet-format/blob/master/Encodings.md#delta-strings-delta_byte_array--7
//
// Supported Types: BYTE_ARRAY
func DeltaByteArrayEncode(bytesSlices [][]byte) (data []byte) {
prefixLengths := make([]int32, len(bytesSlices))
suffixes := make([][]byte, len(bytesSlices))
var i, j int
for i = 1; i < len(bytesSlices); i++ {
for j = 0; j < len(bytesSlices[i-1]) && j < len(bytesSlices[i]); j++ {
if bytesSlices[i-1][j] != bytesSlices[i][j] {
break
}
}
prefixLengths[i] = int32(j)
suffixes[i] = bytesSlices[i][j:]
}
data = deltaEncodeInt32s(prefixLengths)
return append(data, DeltaLengthByteArrayEncode(suffixes)...)
}

View file

@ -0,0 +1,140 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package encoding
import (
"bytes"
"encoding/binary"
"fmt"
"math"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
func plainEncodeBools(bs []bool) []byte {
data := make([]byte, (len(bs)+7)/8)
for i := range bs {
if bs[i] {
data[i/8] |= 1 << uint(i%8)
}
}
return data
}
func plainEncodeInt32s(i32s []int32) []byte {
data := make([]byte, len(i32s)*4)
for i, i32 := range i32s {
binary.LittleEndian.PutUint32(data[i*4:], uint32(i32))
}
return data
}
func plainEncodeInt64s(i64s []int64) []byte {
data := make([]byte, len(i64s)*8)
for i, i64 := range i64s {
binary.LittleEndian.PutUint64(data[i*8:], uint64(i64))
}
return data
}
func plainEncodeFloat32s(f32s []float32) []byte {
data := make([]byte, len(f32s)*4)
for i, f32 := range f32s {
binary.LittleEndian.PutUint32(data[i*4:], math.Float32bits(f32))
}
return data
}
func plainEncodeFloat64s(f64s []float64) []byte {
data := make([]byte, len(f64s)*8)
for i, f64 := range f64s {
binary.LittleEndian.PutUint64(data[i*8:], math.Float64bits(f64))
}
return data
}
func plainEncodeBytesSlices(bytesSlices [][]byte) []byte {
buf := new(bytes.Buffer)
for _, s := range bytesSlices {
if err := binary.Write(buf, binary.LittleEndian, uint32(len(s))); err != nil {
panic(err)
}
if _, err := buf.Write(s); err != nil {
panic(err)
}
}
return buf.Bytes()
}
// PlainEncode encodes values specified in https://github.com/apache/parquet-format/blob/master/Encodings.md#plain-plain--0
//
// Supported Types: BOOLEAN, INT32, INT64, FLOAT, DOUBLE, BYTE_ARRAY
func PlainEncode(values interface{}, parquetType parquet.Type) []byte {
switch parquetType {
case parquet.Type_BOOLEAN:
bs, ok := values.([]bool)
if !ok {
panic(fmt.Errorf("expected slice of bool"))
}
return plainEncodeBools(bs)
case parquet.Type_INT32:
i32s, ok := values.([]int32)
if !ok {
panic(fmt.Errorf("expected slice of int32"))
}
return plainEncodeInt32s(i32s)
case parquet.Type_INT64:
i64s, ok := values.([]int64)
if !ok {
panic(fmt.Errorf("expected slice of int64"))
}
return plainEncodeInt64s(i64s)
case parquet.Type_FLOAT:
f32s, ok := values.([]float32)
if !ok {
panic(fmt.Errorf("expected slice of float32"))
}
return plainEncodeFloat32s(f32s)
case parquet.Type_DOUBLE:
f64s, ok := values.([]float64)
if !ok {
panic(fmt.Errorf("expected slice of float64"))
}
return plainEncodeFloat64s(f64s)
case parquet.Type_BYTE_ARRAY:
bytesSlices, ok := values.([][]byte)
if !ok {
panic(fmt.Errorf("expected slice of byte array"))
}
return plainEncodeBytesSlices(bytesSlices)
}
panic(fmt.Errorf("%v parquet type unsupported", parquetType))
}

View file

@ -0,0 +1,147 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package encoding
import (
"math"
"reflect"
"testing"
)
func TestPlainEncodeBools(t *testing.T) {
testCases := []struct {
bs []bool
expectedResult []byte
}{
{nil, []byte{}},
{[]bool{}, []byte{}},
{[]bool{true}, []byte{1}},
{[]bool{false}, []byte{0}},
{[]bool{true, true}, []byte{3}},
{[]bool{false, false}, []byte{0}},
{[]bool{false, true}, []byte{2}},
{[]bool{true, false}, []byte{1}},
{[]bool{false, false, false, false, false, false, false, true, true}, []byte{128, 1}},
}
for i, testCase := range testCases {
result := plainEncodeBools(testCase.bs)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
func TestPlainEncodeInt32s(t *testing.T) {
testCases := []struct {
i32s []int32
expectedResult []byte
}{
{nil, []byte{}},
{[]int32{}, []byte{}},
{[]int32{1}, []byte{1, 0, 0, 0}},
{[]int32{-1}, []byte{255, 255, 255, 255}},
{[]int32{256}, []byte{0, 1, 0, 0}},
{[]int32{math.MinInt32}, []byte{0, 0, 0, 128}},
{[]int32{math.MaxInt32}, []byte{255, 255, 255, 127}},
{[]int32{257, -2}, []byte{1, 1, 0, 0, 254, 255, 255, 255}},
}
for i, testCase := range testCases {
result := plainEncodeInt32s(testCase.i32s)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
func TestPlainEncodeInt64s(t *testing.T) {
testCases := []struct {
i64s []int64
expectedResult []byte
}{
{nil, []byte{}},
{[]int64{}, []byte{}},
{[]int64{1}, []byte{1, 0, 0, 0, 0, 0, 0, 0}},
{[]int64{-1}, []byte{255, 255, 255, 255, 255, 255, 255, 255}},
{[]int64{256}, []byte{0, 1, 0, 0, 0, 0, 0, 0}},
{[]int64{math.MinInt64}, []byte{0, 0, 0, 0, 0, 0, 0, 128}},
{[]int64{math.MaxInt64}, []byte{255, 255, 255, 255, 255, 255, 255, 127}},
{[]int64{257, -2}, []byte{1, 1, 0, 0, 0, 0, 0, 0, 254, 255, 255, 255, 255, 255, 255, 255}},
}
for i, testCase := range testCases {
result := plainEncodeInt64s(testCase.i64s)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
func TestPlainEncodeFloat32s(t *testing.T) {
testCases := []struct {
f32s []float32
expectedResult []byte
}{
{nil, []byte{}},
{[]float32{}, []byte{}},
{[]float32{1}, []byte{0, 0, 128, 63}},
{[]float32{1.0}, []byte{0, 0, 128, 63}},
{[]float32{-1}, []byte{0, 0, 128, 191}},
{[]float32{-1.0}, []byte{0, 0, 128, 191}},
{[]float32{256}, []byte{0, 0, 128, 67}},
{[]float32{1.1}, []byte{205, 204, 140, 63}},
{[]float32{-1.1}, []byte{205, 204, 140, 191}},
{[]float32{math.Pi}, []byte{219, 15, 73, 64}},
{[]float32{257, -2}, []byte{0, 128, 128, 67, 0, 0, 0, 192}},
{[]float32{257.1, -2.1}, []byte{205, 140, 128, 67, 102, 102, 6, 192}},
}
for i, testCase := range testCases {
result := plainEncodeFloat32s(testCase.f32s)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}
func TestPlainEncodeFloat64s(t *testing.T) {
testCases := []struct {
f64s []float64
expectedResult []byte
}{
{nil, []byte{}},
{[]float64{}, []byte{}},
{[]float64{1}, []byte{0, 0, 0, 0, 0, 0, 240, 63}},
{[]float64{1.0}, []byte{0, 0, 0, 0, 0, 0, 240, 63}},
{[]float64{-1}, []byte{0, 0, 0, 0, 0, 0, 240, 191}},
{[]float64{-1.0}, []byte{0, 0, 0, 0, 0, 0, 240, 191}},
{[]float64{256}, []byte{0, 0, 0, 0, 0, 0, 112, 64}},
{[]float64{1.1}, []byte{154, 153, 153, 153, 153, 153, 241, 63}},
{[]float64{-1.1}, []byte{154, 153, 153, 153, 153, 153, 241, 191}},
{[]float64{math.Pi}, []byte{24, 45, 68, 84, 251, 33, 9, 64}},
{[]float64{257, -2}, []byte{0, 0, 0, 0, 0, 16, 112, 64, 0, 0, 0, 0, 0, 0, 0, 192}},
{[]float64{257.1, -2.1}, []byte{154, 153, 153, 153, 153, 17, 112, 64, 205, 204, 204, 204, 204, 204, 0, 192}},
}
for i, testCase := range testCases {
result := plainEncodeFloat64s(testCase.f64s)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}

View file

@ -0,0 +1,84 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package encoding
import (
"fmt"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
func rleEncodeInt32s(i32s []int32, bitWidth int32) (data []byte) {
j := 0
for i := 0; i < len(i32s); i = j {
for j = i + 1; j < len(i32s) && i32s[i] == i32s[j]; j++ {
}
headerBytes := varIntEncode(uint64((j - i) << 1))
data = append(data, headerBytes...)
valBytes := plainEncodeInt32s([]int32{i32s[i]})
byteCount := (bitWidth + 7) / 8
data = append(data, valBytes[:byteCount]...)
}
return data
}
func rleEncodeInt64s(i64s []int64, bitWidth int32) (data []byte) {
j := 0
for i := 0; i < len(i64s); i = j {
for j = i + 1; j < len(i64s) && i64s[i] == i64s[j]; j++ {
}
headerBytes := varIntEncode(uint64((j - i) << 1))
data = append(data, headerBytes...)
valBytes := plainEncodeInt64s([]int64{i64s[i]})
byteCount := (bitWidth + 7) / 8
data = append(data, valBytes[:byteCount]...)
}
return data
}
// RLEBitPackedHybridEncode encodes values specified in https://github.com/apache/parquet-format/blob/master/Encodings.md#run-length-encoding--bit-packing-hybrid-rle--3
//
// Supported Types: INT32, INT64
func RLEBitPackedHybridEncode(values interface{}, bitWidth int32, parquetType parquet.Type) []byte {
var rleBytes []byte
switch parquetType {
case parquet.Type_INT32:
i32s, ok := values.([]int32)
if !ok {
panic(fmt.Errorf("expected slice of int32"))
}
rleBytes = rleEncodeInt32s(i32s, bitWidth)
case parquet.Type_INT64:
i64s, ok := values.([]int64)
if !ok {
panic(fmt.Errorf("expected slice of int64"))
}
rleBytes = rleEncodeInt64s(i64s, bitWidth)
default:
panic(fmt.Errorf("%v parquet type unsupported", parquetType))
}
lenBytes := plainEncodeInt32s([]int32{int32(len(rleBytes))})
return append(lenBytes, rleBytes...)
}

View file

@ -0,0 +1,44 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package encoding
import (
"reflect"
"testing"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
func TestRLEEncodeInt32s(t *testing.T) {
testCases := []struct {
values []int32
bitWidth int32
dataType parquet.Type
expectedResult []byte
}{
{[]int32{3, 5, 7}, 1, parquet.Type_INT32, []byte{2, 3, 2, 5, 2, 7}},
{[]int32{3, 3, 3}, 1, parquet.Type_INT32, []byte{6, 3}},
{[]int32{2, 2, 3, 3, 3}, 1, parquet.Type_INT32, []byte{4, 2, 6, 3}},
}
for i, testCase := range testCases {
result := rleEncodeInt32s(testCase.values, testCase.bitWidth)
if !reflect.DeepEqual(result, testCase.expectedResult) {
t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
}
}
}

View file

@ -0,0 +1,60 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package encoding
import (
"github.com/minio/minio/pkg/s3select/internal/parquet-go/common"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
// RLEDictEncode encodes values specified in https://github.com/apache/parquet-format/blob/master/Encodings.md#dictionary-encoding-plain_dictionary--2-and-rle_dictionary--8 and returns dictionary page data and data page data.
//
// Dictionary page data contains PLAIN encodeed slice of uniquely fully defined non-nil values.
// Data page data contains RLE/Bit-Packed Hybrid encoded indices of fully defined non-nil values.
//
// Supported Types: BOOLEAN, INT32, INT64, FLOAT, DOUBLE, BYTE_ARRAY
func RLEDictEncode(values []interface{}, parquetType parquet.Type, bitWidth int32) (dictPageData, dataPageData []byte, dictValueCount int32, indexBitWidth uint8) {
var definedValues []interface{}
var indices []int32
valueIndexMap := make(map[interface{}]int32)
j := 0
for i := 0; i < len(values); i = j {
for j = i; j < len(values); j++ {
value := values[j]
if value == nil {
continue
}
index, found := valueIndexMap[value]
if !found {
index = int32(len(definedValues))
definedValues = append(definedValues, value)
valueIndexMap[value] = index
}
indices = append(indices, index)
}
}
indexBitWidth = uint8(common.BitWidth(uint64(indices[len(indices)-1])))
dictPageData = PlainEncode(common.ToSliceValue(definedValues, parquetType), parquetType)
dataPageData = RLEBitPackedHybridEncode(indices, int32(indexBitWidth), parquet.Type_INT32)
return dictPageData, dataPageData, int32(len(definedValues)), indexBitWidth
}

View file

@ -0,0 +1,35 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"encoding/binary"
)
func uint32ToBytes(v uint32) []byte {
buf := make([]byte, 4)
binary.LittleEndian.PutUint32(buf, v)
return buf
}
func bytesToUint32(buf []byte) uint32 {
return binary.LittleEndian.Uint32(buf)
}
func bytesToUint64(buf []byte) uint64 {
return binary.LittleEndian.Uint64(buf)
}

Binary file not shown.

View file

@ -0,0 +1,6 @@
// Autogenerated by Thrift Compiler (0.10.0)
// DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
package parquet
var GoUnusedProtection__ int

View file

@ -0,0 +1,18 @@
// Autogenerated by Thrift Compiler (0.10.0)
// DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
package parquet
import (
"bytes"
"fmt"
"git.apache.org/thrift.git/lib/go/thrift"
)
// (needed to ensure safety because of naive import list construction.)
var _ = thrift.ZERO
var _ = fmt.Printf
var _ = bytes.Equal
func init() {
}

File diff suppressed because it is too large Load diff

View file

@ -0,0 +1,23 @@
#!/bin/bash
#
# Minio Cloud Storage, (C) 2018 Minio, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
set -e
rm -f parquet.thrift
wget -q https://github.com/apache/parquet-format/raw/df6132b94f273521a418a74442085fdd5a0aa009/src/main/thrift/parquet.thrift
thrift --gen go parquet.thrift
gofmt -w -s gen-go/parquet

View file

@ -0,0 +1,765 @@
/*
* Minio Cloud Storage, (C) 2018 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"bytes"
"context"
"fmt"
"strings"
"git.apache.org/thrift.git/lib/go/thrift"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
// getBitWidth - returns bits required to place num e.g.
//
// num | width
// -----|-------
// 0 | 0
// 1 | 1
// 2 | 2
// 3 | 2
// 4 | 3
// 5 | 3
// ... | ...
// ... | ...
//
func getBitWidth(num uint64) (width uint64) {
for ; num != 0; num >>= 1 {
width++
}
return width
}
// getMaxDefLevel - get maximum definition level.
func getMaxDefLevel(nameIndexMap map[string]int, schemaElements []*parquet.SchemaElement, path []string) (v int) {
for i := 1; i <= len(path); i++ {
name := strings.Join(path[:i], ".")
if index, ok := nameIndexMap[name]; ok {
if schemaElements[index].GetRepetitionType() != parquet.FieldRepetitionType_REQUIRED {
v++
}
}
}
return v
}
// getMaxRepLevel - get maximum repetition level.
func getMaxRepLevel(nameIndexMap map[string]int, schemaElements []*parquet.SchemaElement, path []string) (v int) {
for i := 1; i <= len(path); i++ {
name := strings.Join(path[:i], ".")
if index, ok := nameIndexMap[name]; ok {
if schemaElements[index].GetRepetitionType() == parquet.FieldRepetitionType_REPEATED {
v++
}
}
}
return v
}
func readPageHeader(reader *thrift.TBufferedTransport) (*parquet.PageHeader, error) {
pageHeader := parquet.NewPageHeader()
if err := pageHeader.Read(thrift.NewTCompactProtocol(reader)); err != nil {
return nil, err
}
return pageHeader, nil
}
func readPage(
thriftReader *thrift.TBufferedTransport,
metadata *parquet.ColumnMetaData,
columnNameIndexMap map[string]int,
schemaElements []*parquet.SchemaElement,
) (page *page, definitionLevels, numRows int64, err error) {
pageHeader, err := readPageHeader(thriftReader)
if err != nil {
return nil, 0, 0, err
}
read := func() (data []byte, err error) {
var repLevelsLen, defLevelsLen int32
var repLevelsBuf, defLevelsBuf []byte
if pageHeader.GetType() == parquet.PageType_DATA_PAGE_V2 {
repLevelsLen = pageHeader.DataPageHeaderV2.GetRepetitionLevelsByteLength()
repLevelsBuf = make([]byte, repLevelsLen)
if _, err = thriftReader.Read(repLevelsBuf); err != nil {
return nil, err
}
defLevelsLen = pageHeader.DataPageHeaderV2.GetDefinitionLevelsByteLength()
defLevelsBuf = make([]byte, defLevelsLen)
if _, err = thriftReader.Read(defLevelsBuf); err != nil {
return nil, err
}
}
dataBuf := make([]byte, pageHeader.GetCompressedPageSize()-repLevelsLen-defLevelsLen)
if _, err = thriftReader.Read(dataBuf); err != nil {
return nil, err
}
if dataBuf, err = compressionCodec(metadata.GetCodec()).uncompress(dataBuf); err != nil {
return nil, err
}
if repLevelsLen == 0 && defLevelsLen == 0 {
return dataBuf, nil
}
if repLevelsLen > 0 {
data = append(data, uint32ToBytes(uint32(repLevelsLen))...)
data = append(data, repLevelsBuf...)
}
if defLevelsLen > 0 {
data = append(data, uint32ToBytes(uint32(defLevelsLen))...)
data = append(data, defLevelsBuf...)
}
data = append(data, dataBuf...)
return data, nil
}
buf, err := read()
if err != nil {
return nil, 0, 0, err
}
path := append([]string{}, metadata.GetPathInSchema()...)
bytesReader := bytes.NewReader(buf)
pageType := pageHeader.GetType()
switch pageType {
case parquet.PageType_INDEX_PAGE:
return nil, 0, 0, fmt.Errorf("page type %v is not supported", parquet.PageType_INDEX_PAGE)
case parquet.PageType_DICTIONARY_PAGE:
page = newDictPage()
page.Header = pageHeader
table := new(table)
table.Path = path
values, err := readValues(bytesReader, metadata.GetType(),
uint64(pageHeader.DictionaryPageHeader.GetNumValues()), 0)
if err != nil {
return nil, 0, 0, err
}
table.Values = getTableValues(values, metadata.GetType())
page.DataTable = table
return page, 0, 0, nil
case parquet.PageType_DATA_PAGE, parquet.PageType_DATA_PAGE_V2:
name := strings.Join(path, ".")
page = newDataPage()
page.Header = pageHeader
maxDefinitionLevel := getMaxDefLevel(columnNameIndexMap, schemaElements, path)
maxRepetitionLevel := getMaxRepLevel(columnNameIndexMap, schemaElements, path)
var numValues uint64
var encodingType parquet.Encoding
if pageHeader.GetType() == parquet.PageType_DATA_PAGE {
numValues = uint64(pageHeader.DataPageHeader.GetNumValues())
encodingType = pageHeader.DataPageHeader.GetEncoding()
} else {
numValues = uint64(pageHeader.DataPageHeaderV2.GetNumValues())
encodingType = pageHeader.DataPageHeaderV2.GetEncoding()
}
var repetitionLevels []int64
if maxRepetitionLevel > 0 {
values, _, err := readDataPageValues(bytesReader, parquet.Encoding_RLE, parquet.Type_INT64,
-1, numValues, getBitWidth(uint64(maxRepetitionLevel)))
if err != nil {
return nil, 0, 0, err
}
if repetitionLevels = values.([]int64); uint64(len(repetitionLevels)) > numValues {
repetitionLevels = repetitionLevels[:numValues]
}
} else {
repetitionLevels = make([]int64, numValues)
}
var definitionLevels []int64
if maxDefinitionLevel > 0 {
values, _, err := readDataPageValues(bytesReader, parquet.Encoding_RLE, parquet.Type_INT64,
-1, numValues, getBitWidth(uint64(maxDefinitionLevel)))
if err != nil {
return nil, 0, 0, err
}
if definitionLevels = values.([]int64); uint64(len(definitionLevels)) > numValues {
definitionLevels = definitionLevels[:numValues]
}
} else {
definitionLevels = make([]int64, numValues)
}
var numNulls uint64
for i := 0; i < len(definitionLevels); i++ {
if definitionLevels[i] != int64(maxDefinitionLevel) {
numNulls++
}
}
var convertedType parquet.ConvertedType = -1
if schemaElements[columnNameIndexMap[name]].IsSetConvertedType() {
convertedType = schemaElements[columnNameIndexMap[name]].GetConvertedType()
}
values, valueType, err := readDataPageValues(bytesReader, encodingType, metadata.GetType(),
convertedType, uint64(len(definitionLevels))-numNulls,
uint64(schemaElements[columnNameIndexMap[name]].GetTypeLength()))
if err != nil {
return nil, 0, 0, err
}
tableValues := getTableValues(values, valueType)
table := new(table)
table.Path = path
table.RepetitionType = schemaElements[columnNameIndexMap[name]].GetRepetitionType()
table.MaxRepetitionLevel = int32(maxRepetitionLevel)
table.MaxDefinitionLevel = int32(maxDefinitionLevel)
table.Values = make([]interface{}, len(definitionLevels))
table.RepetitionLevels = make([]int32, len(definitionLevels))
table.DefinitionLevels = make([]int32, len(definitionLevels))
j := 0
numRows := int64(0)
for i := 0; i < len(definitionLevels); i++ {
table.RepetitionLevels[i] = int32(repetitionLevels[i])
table.DefinitionLevels[i] = int32(definitionLevels[i])
if int(table.DefinitionLevels[i]) == maxDefinitionLevel {
table.Values[i] = tableValues[j]
j++
}
if table.RepetitionLevels[i] == 0 {
numRows++
}
}
page.DataTable = table
return page, int64(len(definitionLevels)), numRows, nil
}
return nil, 0, 0, fmt.Errorf("unknown page type %v", pageType)
}
type page struct {
Header *parquet.PageHeader // Header of a page
DataTable *table // Table to store values
RawData []byte // Compressed data of the page, which is written in parquet file
CompressType parquet.CompressionCodec // Compress type: gzip/snappy/none
DataType parquet.Type // Parquet type of the values in the page
Path []string // Path in schema(include the root)
MaxVal interface{} // Maximum of the values
MinVal interface{} // Minimum of the values
PageSize int32
}
func newPage() *page {
return &page{
Header: parquet.NewPageHeader(),
PageSize: defaultPageSize,
}
}
func newDictPage() *page {
page := newPage()
page.Header.DictionaryPageHeader = parquet.NewDictionaryPageHeader()
return page
}
func newDataPage() *page {
page := newPage()
page.Header.DataPageHeader = parquet.NewDataPageHeader()
return page
}
func (page *page) decode(dictPage *page) {
if dictPage == nil || page == nil || page.Header.DataPageHeader == nil ||
(page.Header.DataPageHeader.Encoding != parquet.Encoding_RLE_DICTIONARY &&
page.Header.DataPageHeader.Encoding != parquet.Encoding_PLAIN_DICTIONARY) {
return
}
for i := 0; i < len(page.DataTable.Values); i++ {
if page.DataTable.Values[i] != nil {
index := page.DataTable.Values[i].(int64)
page.DataTable.Values[i] = dictPage.DataTable.Values[index]
}
}
}
// Get RepetitionLevels and Definitions from RawData
func (page *page) getRLDLFromRawData(columnNameIndexMap map[string]int, schemaElements []*parquet.SchemaElement) (numValues int64, numRows int64, err error) {
bytesReader := bytes.NewReader(page.RawData)
pageType := page.Header.GetType()
var buf []byte
if pageType == parquet.PageType_DATA_PAGE_V2 {
var repLevelsLen, defLevelsLen int32
var repLevelsBuf, defLevelsBuf []byte
repLevelsLen = page.Header.DataPageHeaderV2.GetRepetitionLevelsByteLength()
repLevelsBuf = make([]byte, repLevelsLen)
if _, err = bytesReader.Read(repLevelsBuf); err != nil {
return 0, 0, err
}
defLevelsLen = page.Header.DataPageHeaderV2.GetDefinitionLevelsByteLength()
defLevelsBuf = make([]byte, defLevelsLen)
if _, err = bytesReader.Read(defLevelsBuf); err != nil {
return 0, 0, err
}
dataBuf := make([]byte, len(page.RawData)-int(repLevelsLen)-int(defLevelsLen))
if _, err = bytesReader.Read(dataBuf); err != nil {
return 0, 0, err
}
if repLevelsLen == 0 && defLevelsLen == 0 {
buf = dataBuf
} else {
if repLevelsLen > 0 {
buf = append(buf, uint32ToBytes(uint32(repLevelsLen))...)
buf = append(buf, repLevelsBuf...)
}
if defLevelsLen > 0 {
buf = append(buf, uint32ToBytes(uint32(defLevelsLen))...)
buf = append(buf, defLevelsBuf...)
}
buf = append(buf, dataBuf...)
}
} else {
if buf, err = compressionCodec(page.CompressType).uncompress(page.RawData); err != nil {
return 0, 0, err
}
}
bytesReader = bytes.NewReader(buf)
switch pageType {
case parquet.PageType_DICTIONARY_PAGE:
table := new(table)
table.Path = page.Path
page.DataTable = table
return 0, 0, nil
case parquet.PageType_DATA_PAGE, parquet.PageType_DATA_PAGE_V2:
var numValues uint64
if pageType == parquet.PageType_DATA_PAGE {
numValues = uint64(page.Header.DataPageHeader.GetNumValues())
} else {
numValues = uint64(page.Header.DataPageHeaderV2.GetNumValues())
}
maxDefinitionLevel := getMaxDefLevel(columnNameIndexMap, schemaElements, page.Path)
maxRepetitionLevel := getMaxRepLevel(columnNameIndexMap, schemaElements, page.Path)
var repetitionLevels []int64
if maxRepetitionLevel > 0 {
values, _, err := readDataPageValues(bytesReader, parquet.Encoding_RLE, parquet.Type_INT64,
-1, numValues, getBitWidth(uint64(maxRepetitionLevel)))
if err != nil {
return 0, 0, err
}
if repetitionLevels = values.([]int64); uint64(len(repetitionLevels)) > numValues {
repetitionLevels = repetitionLevels[:numValues]
}
} else {
repetitionLevels = make([]int64, numValues)
}
var definitionLevels []int64
if maxDefinitionLevel > 0 {
values, _, err := readDataPageValues(bytesReader, parquet.Encoding_RLE, parquet.Type_INT64,
-1, numValues, getBitWidth(uint64(maxDefinitionLevel)))
if err != nil {
return 0, 0, err
}
if definitionLevels = values.([]int64); uint64(len(definitionLevels)) > numValues {
definitionLevels = definitionLevels[:numValues]
}
} else {
definitionLevels = make([]int64, numValues)
}
table := new(table)
table.Path = page.Path
name := strings.Join(page.Path, ".")
table.RepetitionType = schemaElements[columnNameIndexMap[name]].GetRepetitionType()
table.MaxRepetitionLevel = int32(maxRepetitionLevel)
table.MaxDefinitionLevel = int32(maxDefinitionLevel)
table.Values = make([]interface{}, len(definitionLevels))
table.RepetitionLevels = make([]int32, len(definitionLevels))
table.DefinitionLevels = make([]int32, len(definitionLevels))
numRows := int64(0)
for i := 0; i < len(definitionLevels); i++ {
table.RepetitionLevels[i] = int32(repetitionLevels[i])
table.DefinitionLevels[i] = int32(definitionLevels[i])
if table.RepetitionLevels[i] == 0 {
numRows++
}
}
page.DataTable = table
page.RawData = buf[len(buf)-bytesReader.Len():]
return int64(numValues), numRows, nil
}
return 0, 0, fmt.Errorf("Unsupported page type %v", pageType)
}
func (page *page) getValueFromRawData(columnNameIndexMap map[string]int, schemaElements []*parquet.SchemaElement) (err error) {
pageType := page.Header.GetType()
switch pageType {
case parquet.PageType_DICTIONARY_PAGE:
bytesReader := bytes.NewReader(page.RawData)
var values interface{}
values, err = readValues(bytesReader, page.DataType,
uint64(page.Header.DictionaryPageHeader.GetNumValues()), 0)
if err != nil {
return err
}
page.DataTable.Values = getTableValues(values, page.DataType)
return nil
case parquet.PageType_DATA_PAGE_V2:
if page.RawData, err = compressionCodec(page.CompressType).uncompress(page.RawData); err != nil {
return err
}
fallthrough
case parquet.PageType_DATA_PAGE:
encodingType := page.Header.DataPageHeader.GetEncoding()
bytesReader := bytes.NewReader(page.RawData)
var numNulls uint64
for i := 0; i < len(page.DataTable.DefinitionLevels); i++ {
if page.DataTable.DefinitionLevels[i] != page.DataTable.MaxDefinitionLevel {
numNulls++
}
}
name := strings.Join(page.DataTable.Path, ".")
var convertedType parquet.ConvertedType = -1
if schemaElements[columnNameIndexMap[name]].IsSetConvertedType() {
convertedType = schemaElements[columnNameIndexMap[name]].GetConvertedType()
}
values, _, err := readDataPageValues(bytesReader, encodingType, page.DataType,
convertedType, uint64(len(page.DataTable.DefinitionLevels))-numNulls,
uint64(schemaElements[columnNameIndexMap[name]].GetTypeLength()))
if err != nil {
return err
}
tableValues := getTableValues(values, page.DataType)
j := 0
for i := 0; i < len(page.DataTable.DefinitionLevels); i++ {
if page.DataTable.DefinitionLevels[i] == page.DataTable.MaxDefinitionLevel {
page.DataTable.Values[i] = tableValues[j]
j++
}
}
page.RawData = []byte{}
return nil
}
return fmt.Errorf("unsupported page type %v", pageType)
}
func (page *page) toDataPage(compressType parquet.CompressionCodec) []byte {
values := []interface{}{}
for i := range page.DataTable.DefinitionLevels {
if page.DataTable.DefinitionLevels[i] == page.DataTable.MaxDefinitionLevel {
values = append(values, page.DataTable.Values[i])
}
}
valuesBytes := encodeValues(interfacesToValues(values, page.DataTable.Type), page.DataType, page.DataTable.Encoding, page.DataTable.BitWidth)
var defLevelBytes []byte
if page.DataTable.MaxDefinitionLevel > 0 {
defLevels := make([]int64, len(page.DataTable.DefinitionLevels))
for i := range page.DataTable.DefinitionLevels {
defLevels[i] = int64(page.DataTable.DefinitionLevels[i])
}
defLevelBytes = valuesToRLEBitPackedHybridBytes(
defLevels,
int32(getBitWidth(uint64(page.DataTable.MaxDefinitionLevel))),
parquet.Type_INT64,
)
}
var repLevelBytes []byte
if page.DataTable.MaxRepetitionLevel > 0 {
repLevels := make([]int64, len(page.DataTable.DefinitionLevels))
for i := range page.DataTable.DefinitionLevels {
repLevels[i] = int64(page.DataTable.RepetitionLevels[i])
}
repLevelBytes = valuesToRLEBitPackedHybridBytes(
repLevels,
int32(getBitWidth(uint64(page.DataTable.MaxRepetitionLevel))),
parquet.Type_INT64,
)
}
data := repLevelBytes
data = append(data, defLevelBytes...)
data = append(data, valuesBytes...)
compressedData, err := compressionCodec(compressType).compress(data)
if err != nil {
panic(err)
}
page.Header = parquet.NewPageHeader()
page.Header.Type = parquet.PageType_DATA_PAGE
page.Header.CompressedPageSize = int32(len(compressedData))
page.Header.UncompressedPageSize = int32(len(data))
page.Header.DataPageHeader = parquet.NewDataPageHeader()
page.Header.DataPageHeader.NumValues = int32(len(page.DataTable.DefinitionLevels))
page.Header.DataPageHeader.DefinitionLevelEncoding = parquet.Encoding_RLE
page.Header.DataPageHeader.RepetitionLevelEncoding = parquet.Encoding_RLE
page.Header.DataPageHeader.Encoding = page.DataTable.Encoding
page.Header.DataPageHeader.Statistics = parquet.NewStatistics()
if page.MaxVal != nil {
tmpBuf := valueToBytes(page.MaxVal, page.DataType)
if page.DataType == parquet.Type_BYTE_ARRAY {
switch page.DataTable.ConvertedType {
case parquet.ConvertedType_UTF8, parquet.ConvertedType_DECIMAL:
tmpBuf = tmpBuf[4:]
}
}
page.Header.DataPageHeader.Statistics.Max = tmpBuf
}
if page.MinVal != nil {
tmpBuf := valueToBytes(page.MinVal, page.DataType)
if page.DataType == parquet.Type_BYTE_ARRAY {
switch page.DataTable.ConvertedType {
case parquet.ConvertedType_UTF8, parquet.ConvertedType_DECIMAL:
tmpBuf = tmpBuf[4:]
}
}
page.Header.DataPageHeader.Statistics.Min = tmpBuf
}
ts := thrift.NewTSerializer()
ts.Protocol = thrift.NewTCompactProtocolFactory().GetProtocol(ts.Transport)
pageHeaderBytes, err := ts.Write(context.TODO(), page.Header)
if err != nil {
panic(err)
}
page.RawData = append(pageHeaderBytes, compressedData...)
return page.RawData
}
func (page *page) toDataPageV2(compressType parquet.CompressionCodec) []byte {
values := []interface{}{}
for i := range page.DataTable.DefinitionLevels {
if page.DataTable.DefinitionLevels[i] == page.DataTable.MaxDefinitionLevel {
values = append(values, page.DataTable.Values[i])
}
}
valuesBytes := encodeValues(values, page.DataType, page.DataTable.Encoding, page.DataTable.BitWidth)
var defLevelBytes []byte
if page.DataTable.MaxDefinitionLevel > 0 {
defLevels := make([]int64, len(page.DataTable.DefinitionLevels))
for i := range page.DataTable.DefinitionLevels {
defLevels[i] = int64(page.DataTable.DefinitionLevels[i])
}
defLevelBytes = valuesToRLEBytes(
defLevels,
int32(getBitWidth(uint64(page.DataTable.MaxDefinitionLevel))),
parquet.Type_INT64,
)
}
var repLevelBytes []byte
numRows := int32(0)
if page.DataTable.MaxRepetitionLevel > 0 {
repLevels := make([]int64, len(page.DataTable.DefinitionLevels))
for i := range page.DataTable.DefinitionLevels {
repLevels[i] = int64(page.DataTable.RepetitionLevels[i])
if page.DataTable.RepetitionLevels[i] == 0 {
numRows++
}
}
repLevelBytes = valuesToRLEBytes(
repLevels,
int32(getBitWidth(uint64(page.DataTable.MaxRepetitionLevel))),
parquet.Type_INT64,
)
}
compressedData, err := compressionCodec(compressType).compress(valuesBytes)
if err != nil {
panic(err)
}
page.Header = parquet.NewPageHeader()
page.Header.Type = parquet.PageType_DATA_PAGE_V2
page.Header.CompressedPageSize = int32(len(compressedData) + len(defLevelBytes) + len(repLevelBytes))
page.Header.UncompressedPageSize = int32(len(valuesBytes) + len(defLevelBytes) + len(repLevelBytes))
page.Header.DataPageHeaderV2 = parquet.NewDataPageHeaderV2()
page.Header.DataPageHeaderV2.NumValues = int32(len(page.DataTable.Values))
page.Header.DataPageHeaderV2.NumNulls = page.Header.DataPageHeaderV2.NumValues - int32(len(values))
page.Header.DataPageHeaderV2.NumRows = numRows
page.Header.DataPageHeaderV2.Encoding = page.DataTable.Encoding
page.Header.DataPageHeaderV2.DefinitionLevelsByteLength = int32(len(defLevelBytes))
page.Header.DataPageHeaderV2.RepetitionLevelsByteLength = int32(len(repLevelBytes))
page.Header.DataPageHeaderV2.IsCompressed = true
page.Header.DataPageHeaderV2.Statistics = parquet.NewStatistics()
if page.MaxVal != nil {
tmpBuf := valueToBytes(page.MaxVal, page.DataType)
if page.DataType == parquet.Type_BYTE_ARRAY {
switch page.DataTable.ConvertedType {
case parquet.ConvertedType_UTF8, parquet.ConvertedType_DECIMAL:
tmpBuf = tmpBuf[4:]
}
}
page.Header.DataPageHeaderV2.Statistics.Max = tmpBuf
}
if page.MinVal != nil {
tmpBuf := valueToBytes(page.MinVal, page.DataType)
if page.DataType == parquet.Type_BYTE_ARRAY {
switch page.DataTable.ConvertedType {
case parquet.ConvertedType_UTF8, parquet.ConvertedType_DECIMAL:
tmpBuf = tmpBuf[4:]
}
}
page.Header.DataPageHeaderV2.Statistics.Min = tmpBuf
}
ts := thrift.NewTSerializer()
ts.Protocol = thrift.NewTCompactProtocolFactory().GetProtocol(ts.Transport)
pageHeaderBytes, err := ts.Write(context.TODO(), page.Header)
if err != nil {
panic(err)
}
page.RawData = append(pageHeaderBytes, repLevelBytes...)
page.RawData = append(page.RawData, defLevelBytes...)
page.RawData = append(page.RawData, compressedData...)
return page.RawData
}
func (page *page) toDictPage(compressType parquet.CompressionCodec, dataType parquet.Type) []byte {
valuesBytes := valuesToBytes(page.DataTable.Values, dataType)
compressedData, err := compressionCodec(compressType).compress(valuesBytes)
if err != nil {
panic(err)
}
page.Header = parquet.NewPageHeader()
page.Header.Type = parquet.PageType_DICTIONARY_PAGE
page.Header.CompressedPageSize = int32(len(compressedData))
page.Header.UncompressedPageSize = int32(len(valuesBytes))
page.Header.DictionaryPageHeader = parquet.NewDictionaryPageHeader()
page.Header.DictionaryPageHeader.NumValues = int32(len(page.DataTable.Values))
page.Header.DictionaryPageHeader.Encoding = parquet.Encoding_PLAIN
ts := thrift.NewTSerializer()
ts.Protocol = thrift.NewTCompactProtocolFactory().GetProtocol(ts.Transport)
pageHeaderBytes, err := ts.Write(context.TODO(), page.Header)
if err != nil {
panic(err)
}
page.RawData = append(pageHeaderBytes, compressedData...)
return page.RawData
}
func (page *page) toDictDataPage(compressType parquet.CompressionCodec, bitWidth int32) []byte {
valuesBytes := append([]byte{byte(bitWidth)}, valuesToRLEBytes(page.DataTable.Values, bitWidth, parquet.Type_INT32)...)
var defLevelBytes []byte
if page.DataTable.MaxDefinitionLevel > 0 {
defLevels := make([]int64, len(page.DataTable.DefinitionLevels))
for i := range page.DataTable.DefinitionLevels {
defLevels[i] = int64(page.DataTable.DefinitionLevels[i])
}
defLevelBytes = valuesToRLEBitPackedHybridBytes(
defLevels,
int32(getBitWidth(uint64(page.DataTable.MaxDefinitionLevel))),
parquet.Type_INT64,
)
}
var repLevelBytes []byte
if page.DataTable.MaxRepetitionLevel > 0 {
repLevels := make([]int64, len(page.DataTable.DefinitionLevels))
for i := range page.DataTable.DefinitionLevels {
repLevels[i] = int64(page.DataTable.RepetitionLevels[i])
}
repLevelBytes = valuesToRLEBitPackedHybridBytes(
repLevels,
int32(getBitWidth(uint64(page.DataTable.MaxRepetitionLevel))),
parquet.Type_INT64,
)
}
data := append(repLevelBytes, defLevelBytes...)
data = append(data, valuesBytes...)
compressedData, err := compressionCodec(compressType).compress(data)
if err != nil {
panic(err)
}
page.Header = parquet.NewPageHeader()
page.Header.Type = parquet.PageType_DATA_PAGE
page.Header.CompressedPageSize = int32(len(compressedData))
page.Header.UncompressedPageSize = int32(len(data))
page.Header.DataPageHeader = parquet.NewDataPageHeader()
page.Header.DataPageHeader.NumValues = int32(len(page.DataTable.DefinitionLevels))
page.Header.DataPageHeader.DefinitionLevelEncoding = parquet.Encoding_RLE
page.Header.DataPageHeader.RepetitionLevelEncoding = parquet.Encoding_RLE
page.Header.DataPageHeader.Encoding = parquet.Encoding_PLAIN_DICTIONARY
ts := thrift.NewTSerializer()
ts.Protocol = thrift.NewTCompactProtocolFactory().GetProtocol(ts.Transport)
pageHeaderBytes, err := ts.Write(context.TODO(), page.Header)
if err != nil {
panic(err)
}
page.RawData = append(pageHeaderBytes, compressedData...)
return page.RawData
}

View file

@ -0,0 +1,881 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/**
* File format description for the parquet file format
*/
namespace cpp parquet
namespace java org.apache.parquet.format
/**
* Types supported by Parquet. These types are intended to be used in combination
* with the encodings to control the on disk storage format.
* For example INT16 is not included as a type since a good encoding of INT32
* would handle this.
*/
enum Type {
BOOLEAN = 0;
INT32 = 1;
INT64 = 2;
INT96 = 3; // deprecated, only used by legacy implementations.
FLOAT = 4;
DOUBLE = 5;
BYTE_ARRAY = 6;
FIXED_LEN_BYTE_ARRAY = 7;
}
/**
* Common types used by frameworks(e.g. hive, pig) using parquet. This helps map
* between types in those frameworks to the base types in parquet. This is only
* metadata and not needed to read or write the data.
*/
enum ConvertedType {
/** a BYTE_ARRAY actually contains UTF8 encoded chars */
UTF8 = 0;
/** a map is converted as an optional field containing a repeated key/value pair */
MAP = 1;
/** a key/value pair is converted into a group of two fields */
MAP_KEY_VALUE = 2;
/** a list is converted into an optional field containing a repeated field for its
* values */
LIST = 3;
/** an enum is converted into a binary field */
ENUM = 4;
/**
* A decimal value.
*
* This may be used to annotate binary or fixed primitive types. The
* underlying byte array stores the unscaled value encoded as two's
* complement using big-endian byte order (the most significant byte is the
* zeroth element). The value of the decimal is the value * 10^{-scale}.
*
* This must be accompanied by a (maximum) precision and a scale in the
* SchemaElement. The precision specifies the number of digits in the decimal
* and the scale stores the location of the decimal point. For example 1.23
* would have precision 3 (3 total digits) and scale 2 (the decimal point is
* 2 digits over).
*/
DECIMAL = 5;
/**
* A Date
*
* Stored as days since Unix epoch, encoded as the INT32 physical type.
*
*/
DATE = 6;
/**
* A time
*
* The total number of milliseconds since midnight. The value is stored
* as an INT32 physical type.
*/
TIME_MILLIS = 7;
/**
* A time.
*
* The total number of microseconds since midnight. The value is stored as
* an INT64 physical type.
*/
TIME_MICROS = 8;
/**
* A date/time combination
*
* Date and time recorded as milliseconds since the Unix epoch. Recorded as
* a physical type of INT64.
*/
TIMESTAMP_MILLIS = 9;
/**
* A date/time combination
*
* Date and time recorded as microseconds since the Unix epoch. The value is
* stored as an INT64 physical type.
*/
TIMESTAMP_MICROS = 10;
/**
* An unsigned integer value.
*
* The number describes the maximum number of meainful data bits in
* the stored value. 8, 16 and 32 bit values are stored using the
* INT32 physical type. 64 bit values are stored using the INT64
* physical type.
*
*/
UINT_8 = 11;
UINT_16 = 12;
UINT_32 = 13;
UINT_64 = 14;
/**
* A signed integer value.
*
* The number describes the maximum number of meainful data bits in
* the stored value. 8, 16 and 32 bit values are stored using the
* INT32 physical type. 64 bit values are stored using the INT64
* physical type.
*
*/
INT_8 = 15;
INT_16 = 16;
INT_32 = 17;
INT_64 = 18;
/**
* An embedded JSON document
*
* A JSON document embedded within a single UTF8 column.
*/
JSON = 19;
/**
* An embedded BSON document
*
* A BSON document embedded within a single BINARY column.
*/
BSON = 20;
/**
* An interval of time
*
* This type annotates data stored as a FIXED_LEN_BYTE_ARRAY of length 12
* This data is composed of three separate little endian unsigned
* integers. Each stores a component of a duration of time. The first
* integer identifies the number of months associated with the duration,
* the second identifies the number of days associated with the duration
* and the third identifies the number of milliseconds associated with
* the provided duration. This duration of time is independent of any
* particular timezone or date.
*/
INTERVAL = 21;
}
/**
* Representation of Schemas
*/
enum FieldRepetitionType {
/** This field is required (can not be null) and each record has exactly 1 value. */
REQUIRED = 0;
/** The field is optional (can be null) and each record has 0 or 1 values. */
OPTIONAL = 1;
/** The field is repeated and can contain 0 or more values */
REPEATED = 2;
}
/**
* Statistics per row group and per page
* All fields are optional.
*/
struct Statistics {
/**
* DEPRECATED: min and max value of the column. Use min_value and max_value.
*
* Values are encoded using PLAIN encoding, except that variable-length byte
* arrays do not include a length prefix.
*
* These fields encode min and max values determined by signed comparison
* only. New files should use the correct order for a column's logical type
* and store the values in the min_value and max_value fields.
*
* To support older readers, these may be set when the column order is
* signed.
*/
1: optional binary max;
2: optional binary min;
/** count of null value in the column */
3: optional i64 null_count;
/** count of distinct values occurring */
4: optional i64 distinct_count;
/**
* Min and max values for the column, determined by its ColumnOrder.
*
* Values are encoded using PLAIN encoding, except that variable-length byte
* arrays do not include a length prefix.
*/
5: optional binary max_value;
6: optional binary min_value;
}
/** Empty structs to use as logical type annotations */
struct StringType {} // allowed for BINARY, must be encoded with UTF-8
struct UUIDType {} // allowed for FIXED[16], must encoded raw UUID bytes
struct MapType {} // see LogicalTypes.md
struct ListType {} // see LogicalTypes.md
struct EnumType {} // allowed for BINARY, must be encoded with UTF-8
struct DateType {} // allowed for INT32
/**
* Logical type to annotate a column that is always null.
*
* Sometimes when discovering the schema of existing data, values are always
* null and the physical type can't be determined. This annotation signals
* the case where the physical type was guessed from all null values.
*/
struct NullType {} // allowed for any physical type, only null values stored
/**
* Decimal logical type annotation
*
* To maintain forward-compatibility in v1, implementations using this logical
* type must also set scale and precision on the annotated SchemaElement.
*
* Allowed for physical types: INT32, INT64, FIXED, and BINARY
*/
struct DecimalType {
1: required i32 scale
2: required i32 precision
}
/** Time units for logical types */
struct MilliSeconds {}
struct MicroSeconds {}
struct NanoSeconds {}
union TimeUnit {
1: MilliSeconds MILLIS
2: MicroSeconds MICROS
3: NanoSeconds NANOS
}
/**
* Timestamp logical type annotation
*
* Allowed for physical types: INT64
*/
struct TimestampType {
1: required bool isAdjustedToUTC
2: required TimeUnit unit
}
/**
* Time logical type annotation
*
* Allowed for physical types: INT32 (millis), INT64 (micros, nanos)
*/
struct TimeType {
1: required bool isAdjustedToUTC
2: required TimeUnit unit
}
/**
* Integer logical type annotation
*
* bitWidth must be 8, 16, 32, or 64.
*
* Allowed for physical types: INT32, INT64
*/
struct IntType {
1: required byte bitWidth
2: required bool isSigned
}
/**
* Embedded JSON logical type annotation
*
* Allowed for physical types: BINARY
*/
struct JsonType {
}
/**
* Embedded BSON logical type annotation
*
* Allowed for physical types: BINARY
*/
struct BsonType {
}
/**
* LogicalType annotations to replace ConvertedType.
*
* To maintain compatibility, implementations using LogicalType for a
* SchemaElement must also set the corresponding ConvertedType from the
* following table.
*/
union LogicalType {
1: StringType STRING // use ConvertedType UTF8
2: MapType MAP // use ConvertedType MAP
3: ListType LIST // use ConvertedType LIST
4: EnumType ENUM // use ConvertedType ENUM
5: DecimalType DECIMAL // use ConvertedType DECIMAL
6: DateType DATE // use ConvertedType DATE
7: TimeType TIME // use ConvertedType TIME_MICROS or TIME_MILLIS
8: TimestampType TIMESTAMP // use ConvertedType TIMESTAMP_MICROS or TIMESTAMP_MILLIS
// 9: reserved for INTERVAL
10: IntType INTEGER // use ConvertedType INT_* or UINT_*
11: NullType UNKNOWN // no compatible ConvertedType
12: JsonType JSON // use ConvertedType JSON
13: BsonType BSON // use ConvertedType BSON
14: UUIDType UUID
}
/**
* Represents a element inside a schema definition.
* - if it is a group (inner node) then type is undefined and num_children is defined
* - if it is a primitive type (leaf) then type is defined and num_children is undefined
* the nodes are listed in depth first traversal order.
*/
struct SchemaElement {
/** Data type for this field. Not set if the current element is a non-leaf node */
1: optional Type type;
/** If type is FIXED_LEN_BYTE_ARRAY, this is the byte length of the vales.
* Otherwise, if specified, this is the maximum bit length to store any of the values.
* (e.g. a low cardinality INT col could have this set to 3). Note that this is
* in the schema, and therefore fixed for the entire file.
*/
2: optional i32 type_length;
/** repetition of the field. The root of the schema does not have a repetition_type.
* All other nodes must have one */
3: optional FieldRepetitionType repetition_type;
/** Name of the field in the schema */
4: required string name;
/** Nested fields. Since thrift does not support nested fields,
* the nesting is flattened to a single list by a depth-first traversal.
* The children count is used to construct the nested relationship.
* This field is not set when the element is a primitive type
*/
5: optional i32 num_children;
/** When the schema is the result of a conversion from another model
* Used to record the original type to help with cross conversion.
*/
6: optional ConvertedType converted_type;
/** Used when this column contains decimal data.
* See the DECIMAL converted type for more details.
*/
7: optional i32 scale
8: optional i32 precision
/** When the original schema supports field ids, this will save the
* original field id in the parquet schema
*/
9: optional i32 field_id;
/**
* The logical type of this SchemaElement
*
* LogicalType replaces ConvertedType, but ConvertedType is still required
* for some logical types to ensure forward-compatibility in format v1.
*/
10: optional LogicalType logicalType
}
/**
* Encodings supported by Parquet. Not all encodings are valid for all types. These
* enums are also used to specify the encoding of definition and repetition levels.
* See the accompanying doc for the details of the more complicated encodings.
*/
enum Encoding {
/** Default encoding.
* BOOLEAN - 1 bit per value. 0 is false; 1 is true.
* INT32 - 4 bytes per value. Stored as little-endian.
* INT64 - 8 bytes per value. Stored as little-endian.
* FLOAT - 4 bytes per value. IEEE. Stored as little-endian.
* DOUBLE - 8 bytes per value. IEEE. Stored as little-endian.
* BYTE_ARRAY - 4 byte length stored as little endian, followed by bytes.
* FIXED_LEN_BYTE_ARRAY - Just the bytes.
*/
PLAIN = 0;
/** Group VarInt encoding for INT32/INT64.
* This encoding is deprecated. It was never used
*/
// GROUP_VAR_INT = 1;
/**
* Deprecated: Dictionary encoding. The values in the dictionary are encoded in the
* plain type.
* in a data page use RLE_DICTIONARY instead.
* in a Dictionary page use PLAIN instead
*/
PLAIN_DICTIONARY = 2;
/** Group packed run length encoding. Usable for definition/repetition levels
* encoding and Booleans (on one bit: 0 is false; 1 is true.)
*/
RLE = 3;
/** Bit packed encoding. This can only be used if the data has a known max
* width. Usable for definition/repetition levels encoding.
*/
BIT_PACKED = 4;
/** Delta encoding for integers. This can be used for int columns and works best
* on sorted data
*/
DELTA_BINARY_PACKED = 5;
/** Encoding for byte arrays to separate the length values and the data. The lengths
* are encoded using DELTA_BINARY_PACKED
*/
DELTA_LENGTH_BYTE_ARRAY = 6;
/** Incremental-encoded byte array. Prefix lengths are encoded using DELTA_BINARY_PACKED.
* Suffixes are stored as delta length byte arrays.
*/
DELTA_BYTE_ARRAY = 7;
/** Dictionary encoding: the ids are encoded using the RLE encoding
*/
RLE_DICTIONARY = 8;
}
/**
* Supported compression algorithms.
*
* Codecs added in 2.4 can be read by readers based on 2.4 and later.
* Codec support may vary between readers based on the format version and
* libraries available at runtime. Gzip, Snappy, and LZ4 codecs are
* widely available, while Zstd and Brotli require additional libraries.
*/
enum CompressionCodec {
UNCOMPRESSED = 0;
SNAPPY = 1;
GZIP = 2;
LZO = 3;
BROTLI = 4; // Added in 2.4
LZ4 = 5; // Added in 2.4
ZSTD = 6; // Added in 2.4
}
enum PageType {
DATA_PAGE = 0;
INDEX_PAGE = 1;
DICTIONARY_PAGE = 2;
DATA_PAGE_V2 = 3;
}
/**
* Enum to annotate whether lists of min/max elements inside ColumnIndex
* are ordered and if so, in which direction.
*/
enum BoundaryOrder {
UNORDERED = 0;
ASCENDING = 1;
DESCENDING = 2;
}
/** Data page header */
struct DataPageHeader {
/** Number of values, including NULLs, in this data page. **/
1: required i32 num_values
/** Encoding used for this data page **/
2: required Encoding encoding
/** Encoding used for definition levels **/
3: required Encoding definition_level_encoding;
/** Encoding used for repetition levels **/
4: required Encoding repetition_level_encoding;
/** Optional statistics for the data in this page**/
5: optional Statistics statistics;
}
struct IndexPageHeader {
/** TODO: **/
}
struct DictionaryPageHeader {
/** Number of values in the dictionary **/
1: required i32 num_values;
/** Encoding using this dictionary page **/
2: required Encoding encoding
/** If true, the entries in the dictionary are sorted in ascending order **/
3: optional bool is_sorted;
}
/**
* New page format allowing reading levels without decompressing the data
* Repetition and definition levels are uncompressed
* The remaining section containing the data is compressed if is_compressed is true
**/
struct DataPageHeaderV2 {
/** Number of values, including NULLs, in this data page. **/
1: required i32 num_values
/** Number of NULL values, in this data page.
Number of non-null = num_values - num_nulls which is also the number of values in the data section **/
2: required i32 num_nulls
/** Number of rows in this data page. which means pages change on record boundaries (r = 0) **/
3: required i32 num_rows
/** Encoding used for data in this page **/
4: required Encoding encoding
// repetition levels and definition levels are always using RLE (without size in it)
/** length of the definition levels */
5: required i32 definition_levels_byte_length;
/** length of the repetition levels */
6: required i32 repetition_levels_byte_length;
/** whether the values are compressed.
Which means the section of the page between
definition_levels_byte_length + repetition_levels_byte_length + 1 and compressed_page_size (included)
is compressed with the compression_codec.
If missing it is considered compressed */
7: optional bool is_compressed = 1;
/** optional statistics for this column chunk */
8: optional Statistics statistics;
}
struct PageHeader {
/** the type of the page: indicates which of the *_header fields is set **/
1: required PageType type
/** Uncompressed page size in bytes (not including this header) **/
2: required i32 uncompressed_page_size
/** Compressed page size in bytes (not including this header) **/
3: required i32 compressed_page_size
/** 32bit crc for the data below. This allows for disabling checksumming in HDFS
* if only a few pages needs to be read
**/
4: optional i32 crc
// Headers for page specific data. One only will be set.
5: optional DataPageHeader data_page_header;
6: optional IndexPageHeader index_page_header;
7: optional DictionaryPageHeader dictionary_page_header;
8: optional DataPageHeaderV2 data_page_header_v2;
}
/**
* Wrapper struct to store key values
*/
struct KeyValue {
1: required string key
2: optional string value
}
/**
* Wrapper struct to specify sort order
*/
struct SortingColumn {
/** The column index (in this row group) **/
1: required i32 column_idx
/** If true, indicates this column is sorted in descending order. **/
2: required bool descending
/** If true, nulls will come before non-null values, otherwise,
* nulls go at the end. */
3: required bool nulls_first
}
/**
* statistics of a given page type and encoding
*/
struct PageEncodingStats {
/** the page type (data/dic/...) **/
1: required PageType page_type;
/** encoding of the page **/
2: required Encoding encoding;
/** number of pages of this type with this encoding **/
3: required i32 count;
}
/**
* Description for column metadata
*/
struct ColumnMetaData {
/** Type of this column **/
1: required Type type
/** Set of all encodings used for this column. The purpose is to validate
* whether we can decode those pages. **/
2: required list<Encoding> encodings
/** Path in schema **/
3: required list<string> path_in_schema
/** Compression codec **/
4: required CompressionCodec codec
/** Number of values in this column **/
5: required i64 num_values
/** total byte size of all uncompressed pages in this column chunk (including the headers) **/
6: required i64 total_uncompressed_size
/** total byte size of all compressed pages in this column chunk (including the headers) **/
7: required i64 total_compressed_size
/** Optional key/value metadata **/
8: optional list<KeyValue> key_value_metadata
/** Byte offset from beginning of file to first data page **/
9: required i64 data_page_offset
/** Byte offset from beginning of file to root index page **/
10: optional i64 index_page_offset
/** Byte offset from the beginning of file to first (only) dictionary page **/
11: optional i64 dictionary_page_offset
/** optional statistics for this column chunk */
12: optional Statistics statistics;
/** Set of all encodings used for pages in this column chunk.
* This information can be used to determine if all data pages are
* dictionary encoded for example **/
13: optional list<PageEncodingStats> encoding_stats;
}
struct ColumnChunk {
/** File where column data is stored. If not set, assumed to be same file as
* metadata. This path is relative to the current file.
**/
1: optional string file_path
/** Byte offset in file_path to the ColumnMetaData **/
2: required i64 file_offset
/** Column metadata for this chunk. This is the same content as what is at
* file_path/file_offset. Having it here has it replicated in the file
* metadata.
**/
3: optional ColumnMetaData meta_data
/** File offset of ColumnChunk's OffsetIndex **/
4: optional i64 offset_index_offset
/** Size of ColumnChunk's OffsetIndex, in bytes **/
5: optional i32 offset_index_length
/** File offset of ColumnChunk's ColumnIndex **/
6: optional i64 column_index_offset
/** Size of ColumnChunk's ColumnIndex, in bytes **/
7: optional i32 column_index_length
}
struct RowGroup {
/** Metadata for each column chunk in this row group.
* This list must have the same order as the SchemaElement list in FileMetaData.
**/
1: required list<ColumnChunk> columns
/** Total byte size of all the uncompressed column data in this row group **/
2: required i64 total_byte_size
/** Number of rows in this row group **/
3: required i64 num_rows
/** If set, specifies a sort ordering of the rows in this RowGroup.
* The sorting columns can be a subset of all the columns.
*/
4: optional list<SortingColumn> sorting_columns
}
/** Empty struct to signal the order defined by the physical or logical type */
struct TypeDefinedOrder {}
/**
* Union to specify the order used for the min_value and max_value fields for a
* column. This union takes the role of an enhanced enum that allows rich
* elements (which will be needed for a collation-based ordering in the future).
*
* Possible values are:
* * TypeDefinedOrder - the column uses the order defined by its logical or
* physical type (if there is no logical type).
*
* If the reader does not support the value of this union, min and max stats
* for this column should be ignored.
*/
union ColumnOrder {
/**
* The sort orders for logical types are:
* UTF8 - unsigned byte-wise comparison
* INT8 - signed comparison
* INT16 - signed comparison
* INT32 - signed comparison
* INT64 - signed comparison
* UINT8 - unsigned comparison
* UINT16 - unsigned comparison
* UINT32 - unsigned comparison
* UINT64 - unsigned comparison
* DECIMAL - signed comparison of the represented value
* DATE - signed comparison
* TIME_MILLIS - signed comparison
* TIME_MICROS - signed comparison
* TIMESTAMP_MILLIS - signed comparison
* TIMESTAMP_MICROS - signed comparison
* INTERVAL - unsigned comparison
* JSON - unsigned byte-wise comparison
* BSON - unsigned byte-wise comparison
* ENUM - unsigned byte-wise comparison
* LIST - undefined
* MAP - undefined
*
* In the absence of logical types, the sort order is determined by the physical type:
* BOOLEAN - false, true
* INT32 - signed comparison
* INT64 - signed comparison
* INT96 (only used for legacy timestamps) - undefined
* FLOAT - signed comparison of the represented value (*)
* DOUBLE - signed comparison of the represented value (*)
* BYTE_ARRAY - unsigned byte-wise comparison
* FIXED_LEN_BYTE_ARRAY - unsigned byte-wise comparison
*
* (*) Because the sorting order is not specified properly for floating
* point values (relations vs. total ordering) the following
* compatibility rules should be applied when reading statistics:
* - If the min is a NaN, it should be ignored.
* - If the max is a NaN, it should be ignored.
* - If the min is +0, the row group may contain -0 values as well.
* - If the max is -0, the row group may contain +0 values as well.
* - When looking for NaN values, min and max should be ignored.
*/
1: TypeDefinedOrder TYPE_ORDER;
}
struct PageLocation {
/** Offset of the page in the file **/
1: required i64 offset
/**
* Size of the page, including header. Sum of compressed_page_size and header
* length
*/
2: required i32 compressed_page_size
/**
* Index within the RowGroup of the first row of the page; this means pages
* change on record boundaries (r = 0).
*/
3: required i64 first_row_index
}
struct OffsetIndex {
/**
* PageLocations, ordered by increasing PageLocation.offset. It is required
* that page_locations[i].first_row_index < page_locations[i+1].first_row_index.
*/
1: required list<PageLocation> page_locations
}
/**
* Description for ColumnIndex.
* Each <array-field>[i] refers to the page at OffsetIndex.page_locations[i]
*/
struct ColumnIndex {
/**
* A list of Boolean values to determine the validity of the corresponding
* min and max values. If true, a page contains only null values, and writers
* have to set the corresponding entries in min_values and max_values to
* byte[0], so that all lists have the same length. If false, the
* corresponding entries in min_values and max_values must be valid.
*/
1: required list<bool> null_pages
/**
* Two lists containing lower and upper bounds for the values of each page.
* These may be the actual minimum and maximum values found on a page, but
* can also be (more compact) values that do not exist on a page. For
* example, instead of storing ""Blart Versenwald III", a writer may set
* min_values[i]="B", max_values[i]="C". Such more compact values must still
* be valid values within the column's logical type. Readers must make sure
* that list entries are populated before using them by inspecting null_pages.
*/
2: required list<binary> min_values
3: required list<binary> max_values
/**
* Stores whether both min_values and max_values are orderd and if so, in
* which direction. This allows readers to perform binary searches in both
* lists. Readers cannot assume that max_values[i] <= min_values[i+1], even
* if the lists are ordered.
*/
4: required BoundaryOrder boundary_order
/** A list containing the number of null values for each page **/
5: optional list<i64> null_counts
}
/**
* Description for file metadata
*/
struct FileMetaData {
/** Version of this file **/
1: required i32 version
/** Parquet schema for this file. This schema contains metadata for all the columns.
* The schema is represented as a tree with a single root. The nodes of the tree
* are flattened to a list by doing a depth-first traversal.
* The column metadata contains the path in the schema for that column which can be
* used to map columns to nodes in the schema.
* The first element is the root **/
2: required list<SchemaElement> schema;
/** Number of rows in this file **/
3: required i64 num_rows
/** Row groups in this file **/
4: required list<RowGroup> row_groups
/** Optional key/value metadata **/
5: optional list<KeyValue> key_value_metadata
/** String for application that wrote this file. This should be in the format
* <Application> version <App Version> (build <App Build Hash>).
* e.g. impala version 1.0 (build 6cf94d29b2b7115df4de2c06e2ab4326d721eb55)
**/
6: optional string created_by
/**
* Sort order used for the min_value and max_value fields of each column in
* this file. Each sort order corresponds to one column, determined by its
* position in the list, matching the position of the column in the schema.
*
* Without column_orders, the meaning of the min_value and max_value fields is
* undefined. To ensure well-defined behaviour, if min_value and max_value are
* written to a Parquet file, column_orders must be written as well.
*
* The obsolete min and max fields are always sorted by signed comparison
* regardless of column_orders.
*/
7: optional list<ColumnOrder> column_orders;
}

View file

@ -0,0 +1,166 @@
/*
* Minio Cloud Storage, (C) 2018 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"encoding/binary"
"encoding/json"
"io"
"git.apache.org/thrift.git/lib/go/thrift"
"github.com/minio/minio-go/v6/pkg/set"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
// GetReaderFunc - function type returning io.ReadCloser for requested offset/length.
type GetReaderFunc func(offset, length int64) (io.ReadCloser, error)
func footerSize(getReaderFunc GetReaderFunc) (size int64, err error) {
rc, err := getReaderFunc(-8, 4)
if err != nil {
return 0, err
}
defer rc.Close()
buf := make([]byte, 4)
if _, err = io.ReadFull(rc, buf); err != nil {
return 0, err
}
size = int64(binary.LittleEndian.Uint32(buf))
return size, nil
}
func fileMetadata(getReaderFunc GetReaderFunc) (*parquet.FileMetaData, error) {
size, err := footerSize(getReaderFunc)
if err != nil {
return nil, err
}
rc, err := getReaderFunc(-(8 + size), size)
if err != nil {
return nil, err
}
defer rc.Close()
fileMeta := parquet.NewFileMetaData()
pf := thrift.NewTCompactProtocolFactory()
protocol := pf.GetProtocol(thrift.NewStreamTransportR(rc))
err = fileMeta.Read(protocol)
if err != nil {
return nil, err
}
return fileMeta, nil
}
// Value - denotes column value
type Value struct {
Value interface{}
Type parquet.Type
}
// MarshalJSON - encodes to JSON data
func (value Value) MarshalJSON() (data []byte, err error) {
return json.Marshal(value.Value)
}
// Reader - denotes parquet file.
type Reader struct {
getReaderFunc GetReaderFunc
schemaElements []*parquet.SchemaElement
rowGroups []*parquet.RowGroup
rowGroupIndex int
nameList []string
columnNames set.StringSet
columns map[string]*column
rowIndex int64
}
// NewReader - creates new parquet reader. Reader calls getReaderFunc to get required data range for given columnNames. If columnNames is empty, all columns are used.
func NewReader(getReaderFunc GetReaderFunc, columnNames set.StringSet) (*Reader, error) {
fileMeta, err := fileMetadata(getReaderFunc)
if err != nil {
return nil, err
}
nameList := []string{}
schemaElements := fileMeta.GetSchema()
for _, element := range schemaElements {
nameList = append(nameList, element.Name)
}
return &Reader{
getReaderFunc: getReaderFunc,
rowGroups: fileMeta.GetRowGroups(),
schemaElements: schemaElements,
nameList: nameList,
columnNames: columnNames,
}, nil
}
// Read - reads single record.
func (reader *Reader) Read() (record *Record, err error) {
if reader.rowGroupIndex >= len(reader.rowGroups) {
return nil, io.EOF
}
if reader.columns == nil {
reader.columns, err = getColumns(
reader.rowGroups[reader.rowGroupIndex],
reader.columnNames,
reader.schemaElements,
reader.getReaderFunc,
)
if err != nil {
return nil, err
}
reader.rowIndex = 0
}
if reader.rowIndex >= reader.rowGroups[reader.rowGroupIndex].GetNumRows() {
reader.rowGroupIndex++
reader.Close()
return reader.Read()
}
record = newRecord(reader.nameList)
for name := range reader.columns {
value, valueType := reader.columns[name].read()
record.set(name, Value{value, valueType})
}
reader.rowIndex++
return record, nil
}
// Close - closes underneath readers.
func (reader *Reader) Close() (err error) {
for _, column := range reader.columns {
column.close()
}
reader.columns = nil
reader.rowIndex = 0
return nil
}

View file

@ -0,0 +1,90 @@
/*
* Minio Cloud Storage, (C) 2018 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"io"
"os"
"testing"
"github.com/minio/minio-go/v6/pkg/set"
)
func getReader(name string, offset int64, length int64) (io.ReadCloser, error) {
file, err := os.Open(name)
if err != nil {
return nil, err
}
fi, err := file.Stat()
if err != nil {
return nil, err
}
if offset < 0 {
offset = fi.Size() + offset
}
if _, err = file.Seek(offset, os.SEEK_SET); err != nil {
return nil, err
}
return file, nil
}
func TestReader(t *testing.T) {
name := "example.parquet"
reader, err := NewReader(
func(offset, length int64) (io.ReadCloser, error) {
return getReader(name, offset, length)
},
set.CreateStringSet("one", "two", "three"),
)
if err != nil {
t.Fatal(err)
}
expectedRecords := []string{
`map[one:{-1 DOUBLE} three:{true BOOLEAN} two:{[102 111 111] BYTE_ARRAY}]`,
`map[one:{<nil> DOUBLE} three:{false BOOLEAN} two:{[98 97 114] BYTE_ARRAY}]`,
`map[one:{2.5 DOUBLE} three:{true BOOLEAN} two:{[98 97 122] BYTE_ARRAY}]`,
}
i := 0
for {
record, err := reader.Read()
if err != nil {
if err != io.EOF {
t.Error(err)
}
break
}
if i == len(expectedRecords) {
t.Fatalf("read more than expected record count %v", len(expectedRecords))
}
if record.String() != expectedRecords[i] {
t.Fatalf("record%v: expected: %v, got: %v", i+1, expectedRecords[i], record.String())
}
i++
}
reader.Close()
}

View file

@ -0,0 +1,70 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"fmt"
"strings"
)
// Record - ordered parquet record.
type Record struct {
nameList []string
nameValueMap map[string]Value
}
// String - returns string representation of this record.
func (r *Record) String() string {
values := []string{}
r.Range(func(name string, value Value) bool {
values = append(values, fmt.Sprintf("%v:%v", name, value))
return true
})
return "map[" + strings.Join(values, " ") + "]"
}
func (r *Record) set(name string, value Value) {
r.nameValueMap[name] = value
}
// Get - returns Value of name.
func (r *Record) Get(name string) (Value, bool) {
value, ok := r.nameValueMap[name]
return value, ok
}
// Range - calls f sequentially for each name and value present in the record. If f returns false, range stops the iteration.
func (r *Record) Range(f func(name string, value Value) bool) {
for _, name := range r.nameList {
value, ok := r.nameValueMap[name]
if !ok {
continue
}
if !f(name, value) {
break
}
}
}
func newRecord(nameList []string) *Record {
return &Record{
nameList: nameList,
nameValueMap: make(map[string]Value),
}
}

View file

@ -0,0 +1,126 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package schema
import (
"fmt"
"regexp"
"strings"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
var nameRegexp = regexp.MustCompile("^[a-zA-Z0-9_]+$")
func validataPathSegments(pathSegments []string) error {
for _, pathSegment := range pathSegments {
if !nameRegexp.MatchString(pathSegment) {
return fmt.Errorf("unsupported name %v", strings.Join(pathSegments, "."))
}
}
return nil
}
// Element - represents schema element and its children. Any element must have Name and RepetitionType fields set.
type Element struct {
parquet.SchemaElement
numChildren int32
Encoding *parquet.Encoding // Optional; defaults is computed.
CompressionType *parquet.CompressionCodec // Optional; defaults to SNAPPY.
Children *Tree
MaxDefinitionLevel int64
MaxRepetitionLevel int64
PathInTree string
PathInSchema string
}
// String - stringify this element.
func (element *Element) String() string {
var s []string
s = append(s, "Name:"+element.Name)
s = append(s, "RepetitionType:"+element.RepetitionType.String())
if element.Type != nil {
s = append(s, "Type:"+element.Type.String())
}
if element.ConvertedType != nil {
s = append(s, "ConvertedType:"+element.ConvertedType.String())
}
if element.Encoding != nil {
s = append(s, "Encoding:"+element.Encoding.String())
}
if element.CompressionType != nil {
s = append(s, "CompressionType:"+element.CompressionType.String())
}
if element.Children != nil && element.Children.Length() > 0 {
s = append(s, "Children:"+element.Children.String())
}
s = append(s, fmt.Sprintf("MaxDefinitionLevel:%v", element.MaxDefinitionLevel))
s = append(s, fmt.Sprintf("MaxRepetitionLevel:%v", element.MaxRepetitionLevel))
if element.PathInTree != "" {
s = append(s, "PathInTree:"+element.PathInTree)
}
if element.PathInSchema != "" {
s = append(s, "PathInSchema:"+element.PathInSchema)
}
return "{" + strings.Join(s, ", ") + "}"
}
// NewElement - creates new element.
func NewElement(name string, repetitionType parquet.FieldRepetitionType,
elementType *parquet.Type, convertedType *parquet.ConvertedType,
encoding *parquet.Encoding, compressionType *parquet.CompressionCodec,
children *Tree) (*Element, error) {
if !nameRegexp.MatchString(name) {
return nil, fmt.Errorf("unsupported name %v", name)
}
switch repetitionType {
case parquet.FieldRepetitionType_REQUIRED, parquet.FieldRepetitionType_OPTIONAL, parquet.FieldRepetitionType_REPEATED:
default:
return nil, fmt.Errorf("unknown repetition type %v", repetitionType)
}
if repetitionType == parquet.FieldRepetitionType_REPEATED && (elementType != nil || convertedType != nil) {
return nil, fmt.Errorf("repetition type REPEATED should be used in group element")
}
if children != nil && children.Length() != 0 {
if elementType != nil {
return nil, fmt.Errorf("type should be nil for group element")
}
}
element := Element{
Encoding: encoding,
CompressionType: compressionType,
Children: children,
}
element.Name = name
element.RepetitionType = &repetitionType
element.Type = elementType
element.ConvertedType = convertedType
element.NumChildren = &element.numChildren
if element.Children != nil {
element.numChildren = int32(element.Children.Length())
}
return &element, nil
}

View file

@ -0,0 +1,388 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package schema
import (
"fmt"
"strings"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
)
func updateMaxDLRL(schemaMap map[string]*Element, maxDL, maxRL int64) {
for _, element := range schemaMap {
element.MaxDefinitionLevel = maxDL
element.MaxRepetitionLevel = maxRL
if *element.RepetitionType != parquet.FieldRepetitionType_REQUIRED {
element.MaxDefinitionLevel++
if *element.RepetitionType == parquet.FieldRepetitionType_REPEATED {
element.MaxRepetitionLevel++
}
}
if element.Children != nil {
updateMaxDLRL(element.Children.schemaMap, element.MaxDefinitionLevel, element.MaxRepetitionLevel)
}
}
}
func toParquetSchema(tree *Tree, treePrefix string, schemaPrefix string, schemaList *[]*parquet.SchemaElement, valueElements *[]*Element) (err error) {
tree.Range(func(name string, element *Element) bool {
pathInTree := name
if treePrefix != "" {
pathInTree = treePrefix + "." + name
}
if element.Type == nil && element.ConvertedType == nil && element.Children == nil {
err = fmt.Errorf("%v: group element must have children", pathInTree)
return false
}
if element.ConvertedType != nil {
switch *element.ConvertedType {
case parquet.ConvertedType_LIST:
// Supported structure.
// <REQUIRED|OPTIONAL> group <name> (LIST) {
// REPEATED group list {
// <REQUIRED|OPTIONAL> <element-type> element;
// }
// }
if element.Type != nil {
err = fmt.Errorf("%v: type must be nil for LIST ConvertedType", pathInTree)
return false
}
if element.Children == nil || element.Children.Length() != 1 {
err = fmt.Errorf("%v: children must have one element only for LIST ConvertedType", pathInTree)
return false
}
listElement, ok := element.Children.Get("list")
if !ok {
err = fmt.Errorf("%v: missing group element 'list' for LIST ConvertedType", pathInTree)
return false
}
if listElement.Name != "list" {
err = fmt.Errorf("%v.list: name must be 'list'", pathInTree)
return false
}
if *listElement.RepetitionType != parquet.FieldRepetitionType_REPEATED {
err = fmt.Errorf("%v.list: repetition type must be REPEATED type", pathInTree)
return false
}
if listElement.Type != nil || listElement.ConvertedType != nil {
err = fmt.Errorf("%v.list: type and converted type must be nil", pathInTree)
return false
}
if listElement.Children == nil || listElement.Children.Length() != 1 {
err = fmt.Errorf("%v.list.element: not found", pathInTree)
return false
}
valueElement, ok := listElement.Children.Get("element")
if !ok {
err = fmt.Errorf("%v.list.element: not found", pathInTree)
return false
}
if valueElement.Name != "element" {
err = fmt.Errorf("%v.list.element: name must be 'element'", pathInTree)
return false
}
case parquet.ConvertedType_MAP:
// Supported structure:
// <REQUIRED|OPTIONAL> group <name> (MAP) {
// REPEATED group key_value {
// REQUIRED <key-type> key;
// <REQUIRED|OPTIONAL> <value-type> value;
// }
// }
if element.Type != nil {
err = fmt.Errorf("%v: type must be nil for MAP ConvertedType", pathInTree)
return false
}
if element.Children == nil || element.Children.Length() != 1 {
err = fmt.Errorf("%v: children must have one element only for MAP ConvertedType", pathInTree)
return false
}
keyValueElement, ok := element.Children.Get("key_value")
if !ok {
err = fmt.Errorf("%v: missing group element 'key_value' for MAP ConvertedType", pathInTree)
return false
}
if keyValueElement.Name != "key_value" {
err = fmt.Errorf("%v.key_value: name must be 'key_value'", pathInTree)
return false
}
if *keyValueElement.RepetitionType != parquet.FieldRepetitionType_REPEATED {
err = fmt.Errorf("%v.key_value: repetition type must be REPEATED type", pathInTree)
return false
}
if keyValueElement.Children == nil || keyValueElement.Children.Length() < 1 || keyValueElement.Children.Length() > 2 {
err = fmt.Errorf("%v.key_value: children must have 'key' and optionally 'value' elements for MAP ConvertedType", pathInTree)
return false
}
keyElement, ok := keyValueElement.Children.Get("key")
if !ok {
err = fmt.Errorf("%v.key_value: missing 'key' element for MAP ConvertedType", pathInTree)
return false
}
if keyElement.Name != "key" {
err = fmt.Errorf("%v.key_value.key: name must be 'key'", pathInTree)
return false
}
if *keyElement.RepetitionType != parquet.FieldRepetitionType_REQUIRED {
err = fmt.Errorf("%v.key_value: repetition type must be REQUIRED type", pathInTree)
return false
}
if keyValueElement.Children.Length() == 2 {
valueElement, ok := keyValueElement.Children.Get("value")
if !ok {
err = fmt.Errorf("%v.key_value: second element must be 'value' element for MAP ConvertedType", pathInTree)
return false
}
if valueElement.Name != "value" {
err = fmt.Errorf("%v.key_value.value: name must be 'value'", pathInTree)
return false
}
}
case parquet.ConvertedType_UTF8, parquet.ConvertedType_UINT_8, parquet.ConvertedType_UINT_16:
fallthrough
case parquet.ConvertedType_UINT_32, parquet.ConvertedType_UINT_64, parquet.ConvertedType_INT_8:
fallthrough
case parquet.ConvertedType_INT_16, parquet.ConvertedType_INT_32, parquet.ConvertedType_INT_64:
if element.Type == nil {
err = fmt.Errorf("%v: ConvertedType %v must have Type value", pathInTree, element.ConvertedType)
return false
}
default:
err = fmt.Errorf("%v: unsupported ConvertedType %v", pathInTree, element.ConvertedType)
return false
}
}
element.PathInTree = pathInTree
element.PathInSchema = element.Name
if schemaPrefix != "" {
element.PathInSchema = schemaPrefix + "." + element.Name
}
if element.Type != nil {
*valueElements = append(*valueElements, element)
}
*schemaList = append(*schemaList, &element.SchemaElement)
if element.Children != nil {
element.numChildren = int32(element.Children.Length())
err = toParquetSchema(element.Children, element.PathInTree, element.PathInSchema, schemaList, valueElements)
}
return (err == nil)
})
return err
}
// Tree - represents tree of schema. Tree preserves order in which elements are added.
type Tree struct {
schemaMap map[string]*Element
keys []string
readOnly bool
}
// String - stringify this tree.
func (tree *Tree) String() string {
var s []string
tree.Range(func(name string, element *Element) bool {
s = append(s, fmt.Sprintf("%v: %v", name, element))
return true
})
return "{" + strings.Join(s, ", ") + "}"
}
// Length - returns length of tree.
func (tree *Tree) Length() int {
return len(tree.keys)
}
func (tree *Tree) travel(pathSegments []string) (pathSegmentIndex int, pathSegment string, currElement *Element, parentTree *Tree, found bool) {
parentTree = tree
for pathSegmentIndex, pathSegment = range pathSegments {
if tree == nil {
found = false
break
}
var tmpCurrElement *Element
if tmpCurrElement, found = tree.schemaMap[pathSegment]; !found {
break
}
currElement = tmpCurrElement
parentTree = tree
tree = currElement.Children
}
return
}
// ReadOnly - returns whether this tree is read only or not.
func (tree *Tree) ReadOnly() bool {
return tree.readOnly
}
// Get - returns the element stored for name.
func (tree *Tree) Get(name string) (element *Element, ok bool) {
pathSegments := strings.Split(name, ".")
for _, pathSegment := range pathSegments {
if tree == nil {
element = nil
ok = false
break
}
if element, ok = tree.schemaMap[pathSegment]; !ok {
break
}
tree = element.Children
}
return element, ok
}
// Set - adds or sets element to name.
func (tree *Tree) Set(name string, element *Element) error {
if tree.readOnly {
return fmt.Errorf("read only tree")
}
pathSegments := strings.Split(name, ".")
if err := validataPathSegments(pathSegments); err != nil {
return err
}
i, pathSegment, currElement, parentTree, found := tree.travel(pathSegments)
if !found {
if i != len(pathSegments)-1 {
return fmt.Errorf("parent %v does not exist", strings.Join(pathSegments[:i+1], "."))
}
if currElement == nil {
parentTree = tree
} else {
if currElement.Type != nil {
return fmt.Errorf("parent %v is not group element", strings.Join(pathSegments[:i], "."))
}
if currElement.Children == nil {
currElement.Children = NewTree()
}
parentTree = currElement.Children
}
parentTree.keys = append(parentTree.keys, pathSegment)
}
parentTree.schemaMap[pathSegment] = element
return nil
}
// Delete - deletes name and its element.
func (tree *Tree) Delete(name string) {
if tree.readOnly {
panic(fmt.Errorf("read only tree"))
}
pathSegments := strings.Split(name, ".")
_, pathSegment, _, parentTree, found := tree.travel(pathSegments)
if found {
for i := range parentTree.keys {
if parentTree.keys[i] == pathSegment {
copy(parentTree.keys[i:], parentTree.keys[i+1:])
parentTree.keys = parentTree.keys[:len(parentTree.keys)-1]
break
}
}
delete(parentTree.schemaMap, pathSegment)
}
}
// Range - calls f sequentially for each name and its element. If f returns false, range stops the iteration.
func (tree *Tree) Range(f func(name string, element *Element) bool) {
for _, name := range tree.keys {
if !f(name, tree.schemaMap[name]) {
break
}
}
}
// ToParquetSchema - returns list of parquet SchemaElement and list of elements those stores values.
func (tree *Tree) ToParquetSchema() (schemaList []*parquet.SchemaElement, valueElements []*Element, err error) {
if tree.readOnly {
return nil, nil, fmt.Errorf("read only tree")
}
updateMaxDLRL(tree.schemaMap, 0, 0)
var schemaElements []*parquet.SchemaElement
if err = toParquetSchema(tree, "", "", &schemaElements, &valueElements); err != nil {
return nil, nil, err
}
tree.readOnly = true
numChildren := int32(len(tree.keys))
schemaList = append(schemaList, &parquet.SchemaElement{
Name: "schema",
RepetitionType: parquet.FieldRepetitionTypePtr(parquet.FieldRepetitionType_REQUIRED),
NumChildren: &numChildren,
})
schemaList = append(schemaList, schemaElements...)
return schemaList, valueElements, nil
}
// NewTree - creates new schema tree.
func NewTree() *Tree {
return &Tree{
schemaMap: make(map[string]*Element),
}
}

File diff suppressed because it is too large Load diff

View file

@ -0,0 +1,100 @@
/*
* Minio Cloud Storage, (C) 2018 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import "github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
func getTableValues(values interface{}, valueType parquet.Type) (tableValues []interface{}) {
return valuesToInterfaces(values, valueType)
}
type table struct {
RepetitionType parquet.FieldRepetitionType
Type parquet.Type
MaxDefinitionLevel int32
MaxRepetitionLevel int32
Path []string // Path of this column
Values []interface{} // Parquet values
DefinitionLevels []int32 // Definition Levels slice
RepetitionLevels []int32 // Repetition Levels slice
ConvertedType parquet.ConvertedType
Encoding parquet.Encoding
BitWidth int32
}
func newTableFromTable(srcTable *table) *table {
if srcTable == nil {
return nil
}
return &table{
Type: srcTable.Type,
Path: append([]string{}, srcTable.Path...),
}
}
func (table *table) Merge(tables ...*table) {
for i := 0; i < len(tables); i++ {
if tables[i] == nil {
continue
}
table.Values = append(table.Values, tables[i].Values...)
table.RepetitionLevels = append(table.RepetitionLevels, tables[i].RepetitionLevels...)
table.DefinitionLevels = append(table.DefinitionLevels, tables[i].DefinitionLevels...)
if table.MaxDefinitionLevel < tables[i].MaxDefinitionLevel {
table.MaxDefinitionLevel = tables[i].MaxDefinitionLevel
}
if table.MaxRepetitionLevel < tables[i].MaxRepetitionLevel {
table.MaxRepetitionLevel = tables[i].MaxRepetitionLevel
}
}
}
func (table *table) Pop(numRows int64) *table {
result := newTableFromTable(table)
var i, num int64
for i = int64(0); i < int64(len(table.Values)); i++ {
if table.RepetitionLevels[i] == 0 {
if num >= numRows {
break
}
num++
}
if result.MaxRepetitionLevel < table.RepetitionLevels[i] {
result.MaxRepetitionLevel = table.RepetitionLevels[i]
}
if result.MaxDefinitionLevel < table.DefinitionLevels[i] {
result.MaxDefinitionLevel = table.DefinitionLevels[i]
}
}
result.RepetitionLevels = table.RepetitionLevels[:i]
result.DefinitionLevels = table.DefinitionLevels[:i]
result.Values = table.Values[:i]
table.RepetitionLevels = table.RepetitionLevels[i:]
table.DefinitionLevels = table.DefinitionLevels[i:]
table.Values = table.Values[i:]
return result
}

Binary file not shown.

View file

@ -0,0 +1,146 @@
/*
* Minio Cloud Storage, (C) 2018 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"encoding/csv"
"fmt"
"io"
"os"
"path"
"strings"
"github.com/minio/minio-go/v6/pkg/set"
parquet "github.com/minio/minio/pkg/s3select/internal/parquet-go"
)
func getReader(name string, offset int64, length int64) (io.ReadCloser, error) {
file, err := os.Open(name)
if err != nil {
return nil, err
}
fi, err := file.Stat()
if err != nil {
return nil, err
}
if offset < 0 {
offset = fi.Size() + offset
}
if _, err = file.Seek(offset, os.SEEK_SET); err != nil {
return nil, err
}
return file, nil
}
func printUsage() {
progName := path.Base(os.Args[0])
fmt.Printf("usage: %v PARQUET-FILE [COLUMN...]\n", progName)
fmt.Println()
fmt.Printf("examples:\n")
fmt.Printf("# Convert all columns to CSV\n")
fmt.Printf("$ %v example.parquet\n", progName)
fmt.Println()
fmt.Printf("# Convert specific columns to CSV\n")
fmt.Printf("$ %v example.par firstname dob\n", progName)
fmt.Println()
}
func main() {
if len(os.Args) < 2 {
printUsage()
os.Exit(-1)
}
name := os.Args[1]
ext := path.Ext(name)
csvFilename := name + ".csv"
if ext == ".parquet" || ext == ".par" {
csvFilename = strings.TrimSuffix(name, ext) + ".csv"
}
columns := set.CreateStringSet(os.Args[2:]...)
if len(columns) == 0 {
columns = nil
}
file, err := parquet.NewReader(
func(offset, length int64) (io.ReadCloser, error) {
return getReader(name, offset, length)
},
columns,
)
if err != nil {
fmt.Printf("%v: %v\n", name, err)
os.Exit(1)
}
defer file.Close()
csvFile, err := os.OpenFile(csvFilename, os.O_RDWR|os.O_CREATE, 0755)
if err != nil {
fmt.Printf("%v: %v\n", csvFilename, err)
os.Exit(1)
}
defer csvFile.Close()
csvWriter := csv.NewWriter(csvFile)
defer csvWriter.Flush()
headerWritten := false
for {
record, err := file.Read()
if err != nil {
if err != io.EOF {
fmt.Printf("%v: %v\n", name, err)
os.Exit(1)
}
break
}
if !headerWritten {
var csvRecord []string
record.Range(func(name string, value parquet.Value) bool {
csvRecord = append(csvRecord, name)
return true
})
if err = csvWriter.Write(csvRecord); err != nil {
fmt.Printf("%v: %v\n", csvFilename, err)
os.Exit(1)
}
headerWritten = true
}
var csvRecord []string
record.Range(func(name string, value parquet.Value) bool {
csvRecord = append(csvRecord, fmt.Sprintf("%v", value.Value))
return true
})
if err = csvWriter.Write(csvRecord); err != nil {
fmt.Printf("%v: %v\n", csvFilename, err)
os.Exit(1)
}
}
}

View file

@ -0,0 +1,128 @@
/*
* Minio Cloud Storage, (C) 2018 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"encoding/json"
"fmt"
"io"
"os"
"path"
"strings"
"github.com/minio/minio-go/v6/pkg/set"
parquet "github.com/minio/minio/pkg/s3select/internal/parquet-go"
)
func getReader(name string, offset int64, length int64) (io.ReadCloser, error) {
file, err := os.Open(name)
if err != nil {
return nil, err
}
fi, err := file.Stat()
if err != nil {
return nil, err
}
if offset < 0 {
offset = fi.Size() + offset
}
if _, err = file.Seek(offset, os.SEEK_SET); err != nil {
return nil, err
}
return file, nil
}
func printUsage() {
progName := path.Base(os.Args[0])
fmt.Printf("Usage: %v PARQUET-FILE [COLUMN...]\n", progName)
fmt.Println()
fmt.Printf("Examples:\n")
fmt.Printf("# Convert all columns to JSON\n")
fmt.Printf("$ %v example.parquet\n", progName)
fmt.Println()
fmt.Printf("# Convert specific columns to JSON\n")
fmt.Printf("$ %v example.par firstname dob\n", progName)
fmt.Println()
}
func main() {
if len(os.Args) < 2 {
printUsage()
os.Exit(-1)
}
name := os.Args[1]
ext := path.Ext(name)
jsonFilename := name + ".json"
if ext == ".parquet" || ext == ".par" {
jsonFilename = strings.TrimSuffix(name, ext) + ".json"
}
columns := set.CreateStringSet(os.Args[2:]...)
if len(columns) == 0 {
columns = nil
}
file, err := parquet.NewReader(
func(offset, length int64) (io.ReadCloser, error) {
return getReader(name, offset, length)
},
columns,
)
if err != nil {
fmt.Printf("%v: %v\n", name, err)
os.Exit(1)
}
defer file.Close()
jsonFile, err := os.OpenFile(jsonFilename, os.O_RDWR|os.O_CREATE, 0755)
if err != nil {
fmt.Printf("%v: %v\n", jsonFilename, err)
os.Exit(1)
}
defer jsonFile.Close()
for {
record, err := file.Read()
if err != nil {
if err != io.EOF {
fmt.Printf("%v: %v\n", name, err)
os.Exit(1)
}
break
}
data, err := json.Marshal(record)
if err != nil {
fmt.Printf("%v: %v\n", name, err)
os.Exit(1)
}
data = append(data, byte('\n'))
if _, err = jsonFile.Write(data); err != nil {
fmt.Printf("%v: %v\n", jsonFilename, err)
os.Exit(1)
}
}
}

View file

@ -0,0 +1,191 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"context"
"encoding/binary"
"fmt"
"io"
"git.apache.org/thrift.git/lib/go/thrift"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/data"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/schema"
)
const (
defaultPageSize = 8 * 1024 // 8 KiB
defaultRowGroupSize = 128 * 1024 * 1024 // 128 MiB
)
// Writer - represents parquet writer.
type Writer struct {
PageSize int64
RowGroupSize int64
CompressionType parquet.CompressionCodec
writeCloser io.WriteCloser
numRows int64
offset int64
footer *parquet.FileMetaData
schemaTree *schema.Tree
valueElements []*schema.Element
columnDataMap map[string]*data.Column
rowGroupCount int
}
func (writer *Writer) writeData() (err error) {
if writer.numRows == 0 {
return nil
}
var chunks []*data.ColumnChunk
for _, element := range writer.valueElements {
name := element.PathInTree
columnData, found := writer.columnDataMap[name]
if !found {
continue
}
columnChunk := columnData.Encode(element)
chunks = append(chunks, columnChunk)
}
rowGroup := data.NewRowGroup(chunks, writer.numRows, writer.offset)
for _, chunk := range chunks {
if _, err = writer.writeCloser.Write(chunk.Data()); err != nil {
return err
}
writer.offset += chunk.DataLen()
}
writer.footer.RowGroups = append(writer.footer.RowGroups, rowGroup)
writer.footer.NumRows += writer.numRows
writer.numRows = 0
writer.columnDataMap = nil
return nil
}
// WriteJSON - writes a record represented in JSON.
func (writer *Writer) WriteJSON(recordData []byte) (err error) {
columnDataMap, err := data.UnmarshalJSON(recordData, writer.schemaTree)
if err != nil {
return err
}
return writer.Write(columnDataMap)
}
// Write - writes a record represented in map.
func (writer *Writer) Write(record map[string]*data.Column) (err error) {
if writer.columnDataMap == nil {
writer.columnDataMap = record
} else {
for name, columnData := range record {
var found bool
var element *schema.Element
for _, element = range writer.valueElements {
if element.PathInTree == name {
found = true
break
}
}
if !found {
return fmt.Errorf("%v is not value column", name)
}
writer.columnDataMap[name].Merge(columnData)
}
}
writer.numRows++
if writer.numRows == int64(writer.rowGroupCount) {
return writer.writeData()
}
return nil
}
func (writer *Writer) finalize() (err error) {
if err = writer.writeData(); err != nil {
return err
}
ts := thrift.NewTSerializer()
ts.Protocol = thrift.NewTCompactProtocolFactory().GetProtocol(ts.Transport)
footerBuf, err := ts.Write(context.TODO(), writer.footer)
if err != nil {
return err
}
if _, err = writer.writeCloser.Write(footerBuf); err != nil {
return err
}
footerSizeBuf := make([]byte, 4)
binary.LittleEndian.PutUint32(footerSizeBuf, uint32(len(footerBuf)))
if _, err = writer.writeCloser.Write(footerSizeBuf); err != nil {
return err
}
_, err = writer.writeCloser.Write([]byte("PAR1"))
return err
}
// Close - finalizes and closes writer. If any pending records are available, they are written here.
func (writer *Writer) Close() (err error) {
if err = writer.finalize(); err != nil {
return err
}
return writer.writeCloser.Close()
}
// NewWriter - creates new parquet writer. Binary data of rowGroupCount records are written to writeCloser.
func NewWriter(writeCloser io.WriteCloser, schemaTree *schema.Tree, rowGroupCount int) (*Writer, error) {
if _, err := writeCloser.Write([]byte("PAR1")); err != nil {
return nil, err
}
schemaList, valueElements, err := schemaTree.ToParquetSchema()
if err != nil {
return nil, err
}
footer := parquet.NewFileMetaData()
footer.Version = 1
footer.Schema = schemaList
return &Writer{
PageSize: defaultPageSize,
RowGroupSize: defaultRowGroupSize,
CompressionType: parquet.CompressionCodec_SNAPPY,
writeCloser: writeCloser,
offset: 4,
footer: footer,
schemaTree: schemaTree,
valueElements: valueElements,
rowGroupCount: rowGroupCount,
}, nil
}

View file

@ -0,0 +1,152 @@
/*
* Minio Cloud Storage, (C) 2019 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package parquet
import (
"os"
"testing"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/data"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
"github.com/minio/minio/pkg/s3select/internal/parquet-go/schema"
)
func TestWriterWrite(t *testing.T) {
schemaTree := schema.NewTree()
{
one, err := schema.NewElement("one", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_INT_16),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
two, err := schema.NewElement("two", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BYTE_ARRAY), parquet.ConvertedTypePtr(parquet.ConvertedType_UTF8),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
three, err := schema.NewElement("three", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BOOLEAN), nil, nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err := schemaTree.Set("one", one); err != nil {
t.Fatal(err)
}
if err := schemaTree.Set("two", two); err != nil {
t.Fatal(err)
}
if err := schemaTree.Set("three", three); err != nil {
t.Fatal(err)
}
}
file, err := os.Create("test.parquet")
if err != nil {
t.Fatal(err)
}
writer, err := NewWriter(file, schemaTree, 100)
if err != nil {
t.Fatal(err)
}
oneColumn := data.NewColumn(parquet.Type_INT32)
oneColumn.AddInt32(100, 0, 0)
twoColumn := data.NewColumn(parquet.Type_BYTE_ARRAY)
twoColumn.AddByteArray([]byte("foo"), 0, 0)
threeColumn := data.NewColumn(parquet.Type_BOOLEAN)
threeColumn.AddBoolean(true, 0, 0)
record := map[string]*data.Column{
"one": oneColumn,
"two": twoColumn,
"three": threeColumn,
}
err = writer.Write(record)
if err != nil {
t.Fatal(err)
}
err = writer.Close()
if err != nil {
t.Fatal(err)
}
}
func TestWriterWriteJSON(t *testing.T) {
schemaTree := schema.NewTree()
{
one, err := schema.NewElement("one", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_INT32), parquet.ConvertedTypePtr(parquet.ConvertedType_INT_16),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
two, err := schema.NewElement("two", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BYTE_ARRAY), parquet.ConvertedTypePtr(parquet.ConvertedType_UTF8),
nil, nil, nil)
if err != nil {
t.Fatal(err)
}
three, err := schema.NewElement("three", parquet.FieldRepetitionType_REQUIRED,
parquet.TypePtr(parquet.Type_BOOLEAN), nil, nil, nil, nil)
if err != nil {
t.Fatal(err)
}
if err := schemaTree.Set("one", one); err != nil {
t.Fatal(err)
}
if err := schemaTree.Set("two", two); err != nil {
t.Fatal(err)
}
if err := schemaTree.Set("three", three); err != nil {
t.Fatal(err)
}
}
file, err := os.Create("test.parquet")
if err != nil {
t.Fatal(err)
}
writer, err := NewWriter(file, schemaTree, 100)
if err != nil {
t.Fatal(err)
}
record := `{"one": 100, "two": "foo", "three": true}`
err = writer.WriteJSON([]byte(record))
if err != nil {
t.Fatal(err)
}
err = writer.Close()
if err != nil {
t.Fatal(err)
}
}

View file

@ -20,10 +20,10 @@ import (
"io"
"github.com/bcicen/jstream"
parquetgo "github.com/minio/minio/pkg/s3select/internal/parquet-go"
parquetgen "github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
jsonfmt "github.com/minio/minio/pkg/s3select/json"
"github.com/minio/minio/pkg/s3select/sql"
parquetgo "github.com/minio/parquet-go"
parquetgen "github.com/minio/parquet-go/gen-go/parquet"
)
// Reader - Parquet record reader for S3Select.