Release blocker of v0.5.1

[niebayes]

What type of enhancement is this?

Other

What does the enhancement do?

• Metric table
  • feat: table route for metric engine #3053 @waynexia @MichaelScofield
  • feat: metric engine support alter #3098 @fengjiachun
  • feat(metric): implement role and region_disk_usage #3095
• Add unit tests for Kafka remote wal, including kafka log store, client manager, and topic manager.
  • test(remote_wal): add unit tests for kafka remote wal #2993 @niebayes
• Add sqlness tests for Kafka remote wal.
  • test(remote_wal): add sqlness with kafka wal  #3027 @WenyXu
• Fix some known issues of Kafka remote wal.
  • feat(remote_wal): append a noop record after kafka topic initialization #3040 @WenyXu
  • fix(wal): replay memtable should from flushed_entry_id + 1 #3038 @WenyXu
  • fix(remote_wal): some known issues #3052 @niebayes
  • feat(remote_wal): split an entry if it's too large #3092 @niebayes
• Others
  • refactor: merge standalone and metasrv table metadata allocators #3035 @MichaelScofield
  • Adds information_schema.schemata feat: adds information_schema.schemata #3051
  • non-blocking: test(remote_wal): add kafka image for integration test #3074
  • non-blocking: feat: pushdown filters for some information_schema tables #3091
  • fix: check env before running kafka test #3110

The integration tests for remote wal is going to be attached in the subsequent release.

Implementation challenges

No.