Merge remote-tracking branch 'upstream/release-v1.100'

CHANGES.md

@@ -1,3 +1,12 @@
+# Synapse 1.100.0rc3 (2024-01-24)
+
+### Bugfixes
+
+- Fix database performance regression due to changing Postgres table statistics. Introduced in v1.100.0rc1. ([\#16849](https://github.com/element-hq/synapse/issues/16849))
+
+
+
+
 # Synapse 1.100.0rc2 (2024-01-24)
 
 This version is the same as 1.100.0rc1 but with fixes to the release process.

debian/changelog

@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.100.0~rc3) stable; urgency=medium
+
+  * New Synapse release 1.100.0rc3.
+
+ -- Synapse Packaging team <packages@matrix.org>  Wed, 24 Jan 2024 14:18:15 +0000
+
 matrix-synapse-py3 (1.100.0~rc2) stable; urgency=medium
 
   * New Synapse release 1.100.0rc2.

pyproject.toml

@@ -96,7 +96,7 @@ module-name = "synapse.synapse_rust"
 
 [tool.poetry]
 name = "matrix-synapse"
-version = "1.100.0rc2"
+version = "1.100.0rc3"
 description = "Homeserver for the Matrix decentralised comms protocol"
 authors = ["Matrix.org Team and Contributors <packages@matrix.org>"]
 license = "AGPL-3.0-or-later"

synapse/storage/schema/main/delta/84/01_auth_links_stats.sql.postgres

@@ -16,3 +16,5 @@
 -- figuring that out by itself.
 ALTER TABLE event_auth_chain_links ALTER origin_chain_id SET (n_distinct = -0.5);
 ALTER TABLE event_auth_chain_links ALTER target_chain_id SET (n_distinct = -0.5);
+
+-- We should have done an `ANALYZE event_auth_chain_links` here, but we forgot.

synapse/storage/schema/main/delta/84/03_auth_links_analyze.sql.postgres

@@ -0,0 +1,16 @@
+--
+-- This file is licensed under the Affero General Public License (AGPL) version 3.
+--
+-- Copyright (C) 2023 New Vector, Ltd
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Affero General Public License as
+-- published by the Free Software Foundation, either version 3 of the
+-- License, or (at your option) any later version.
+--
+-- See the GNU Affero General Public License for more details:
+-- <https://www.gnu.org/licenses/agpl-3.0.html>.
+
+-- We need to do an ANALYZE after `01_auth_links_stats.sql.postgres`, where we
+-- fiddled with the stats.
+ANALYZE event_auth_chain_links;