Release of v15.0.3

[frouioui]

This release is scheduled for Thursday 30 March 2023.

Pre-Release

• Notify the community on Slack.
• Make sure the release notes summary is prepared and clean
• Make sure everyone in the release team meet the pre-requisites for the release
  • https://github.com/vitessio/vitess/blob/main/doc/internal/ReleaseInstructions.md#pre-requisites
• Make sure all backports are complete
  • [planner bugfix 15] add expressions to HAVING (#12668) #12699
  • [release-15.0] Fix initialization code to also stop replication to prevent crash #12534 #12692
  • [release-15.0] Always add columns in the Derived operator #12680
  • [release-15.0] ApplyVSchemaDDL: escape Sequence names when writing the VSchema (#12519) #12598
  • [release-15.0] VReplication Last Error: retry error if it happens after timeout (#12114) #12302
  • Bugfix/Backport to v15: Fix schema migrations requested_timestamp zero values #12263
  • [release-15.0] Auto upgrade the Golang version (#12585) #12708
  • [planner fix 15.0] make unknown column an error only for sharded queries #12726
  • [release-15.0] Use a left join to make sure that tables with tablespace=innodb_system are included in the schema (#12672) #12734
  • [release-15.0] vschema ddl: add grammar to accept qualified tables (#12577) #12747
  • [release-15.0] Reset the current lag when closing the replication lag reader. (#12683) #12744
• Do the code freeze and pre release following the instructions.
  • Code freeze of release-15.0 #12764
  • Release of v15.0.3 #12767
  • Changes for new patch releases (v14.0.5, v15.0.3, v16.0.1) website#1426
  • Copy release notes for v16.0.1, v15.0.3, and v14.0.5 #12768

Release

• Follow the release instructions for release: here
  • Back to dev mode after v15.0.3 #12786
• Merge the 15.0.3 release notes on main.
• Make sure arewefastyet benchmarks the new release (https://benchmark.vitess.io/status)
• Release the operator, v2.8.3.

Post-Release

• Notify the community on Slack.
• Benchmarking results
• Tweet both vitess release and operator release