Changelog of Vitess v20.0.1

Bug fixes

Cluster management

Fix Downgrade problem from v20 in semi-sync plugin #16357
[release-20.0] Use default schema reload config values when config file is empty (#16393) #16411

Docker

[release-20.0] Fix the install dependencies script in Docker (#16340) #16347

Documentation

[release-20.0] Fix the v19.0.0 release notes and use the vitess/lite image for the MySQL container (#16282) #16286

Query Serving

[release-20.0] Fix Incorrect Optimization with LIMIT and GROUP BY (#16263) #16268
[release-20.0] planner: Handle ORDER BY inside derived tables (#16353) #16360
[release-20.0] fix issue with aggregation inside of derived tables (#16366) #16385
[release-20.0] Fix Join Predicate Cleanup Bug in Route Merging (#16386) #16390
[release-20.0] Fix panic in user defined aggregation functions planning (#16398) #16404
[release-20.0] Fix panic in schema tracker in presence of keyspace routing rules (#16383) #16405
[release-20.0] Fix subquery planning having an aggregation that is used in order by as long as we can merge it all into a single route (#16402) #16408

VReplication

[release-20.0] VReplication: Properly handle target shards w/o a primary in Reshard (#16283) #16292
[release-20.0] VDiff: Copy non in_keyrange workflow filters to target tablet query (#16307) #16315

CI/Build

Build/CI

[release-20.0] CI: Fix for xtrabackup install failures (#16329) #16333

General

[release-20.0] Upgrade the Golang version to go1.22.5 #16323

Internal Cleanup

Documentation

[release-20.0] Add a note on QueryCacheHits and QueryCacheMisses in the release notes (#16299) #16306

General

[release-20.0] Update post release v20.0.0 #16287

Release

General

[release-20.0-rc] Bump to v20.0.1-SNAPSHOT after the v20.0.0 release #16275
[release-20.0] Bump to v20.0.1-SNAPSHOT after the v20.0.0 release #16276

Testing

Query Serving

[release-20.0] fix flaky test TestQueryTimeoutWithShardTargeting (#16150) #16179
[release-20] Vitess tester workflow (#16127) #16417