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ircd::db::database: Track state of WriteStallCondition in our column instance.

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This commit is contained in:
Jason Volk 2020-12-20 22:10:14 -08:00
parent 770088d677
commit 22b30b1a0a
2 changed files with 31 additions and 5 deletions
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1
ircd/db.h
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@ -379,6 +379,7 @@ ircd::db::database::column final
comparator cmp;
prefix_transform prefix;
compaction_filter cfilter;
rocksdb::WriteStallCondition stall;
std::shared_ptr<struct database::stats> stats;
std::shared_ptr<struct database::allocator> allocator;
rocksdb::BlockBasedTableOptions table_opts;

35
ircd/db_database.cc
View file

@ -1614,6 +1614,7 @@ ircd::db::database::column::column(database &d,
,cmp{this->d, this->descriptor->cmp}
,prefix{this->d, this->descriptor->prefix}
,cfilter{this, this->descriptor->compactor}
,stall{rocksdb::WriteStallCondition::kNormal}
,stats
{
descriptor.name != "default"s?
@ -2902,9 +2903,33 @@ noexcept
{
using rocksdb::WriteStallCondition;
assert(d);
auto &column
{
(*d)[info.cf_name]
};
auto prev
{
info.condition.prev
};
// We seem to be getting these callbacks out of order sometimes. The only
// way to achieve the proper behavior is to always allow transitions to a
// normal state, while ignoring any other incorrect transitions.
const bool changed
{
info.condition.cur != WriteStallCondition::kNormal?
compare_exchange(column.stall, prev, info.condition.cur):
compare_exchange(column.stall, column.stall, info.condition.cur)
};
if(!changed)
return;
const auto level
{
info.condition.cur == rocksdb::WriteStallCondition::kNormal?
column.stall == WriteStallCondition::kNormal?
log::level::INFO:
log::level::WARNING
};
@ -2912,14 +2937,14 @@ noexcept
log::logf
{
log, level,
"[%s] [%s] stall condition %s -> %s",
"[%s] [%s] stall condition %s",
d->name,
info.cf_name,
reflect(info.condition.prev),
reflect(info.condition.cur)
reflect(column.stall),
};
assert(info.condition.cur != rocksdb::WriteStallCondition::kStopped);
assert(column.stall == info.condition.cur);
//assert(column.stall != WriteStallCondition::kStopped);
}
///////////////////////////////////////////////////////////////////////////////