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Posted to jira@kafka.apache.org by GitBox <gi...@apache.org> on 2021/11/12 15:04:27 UTC

[GitHub] [kafka] viktorsomogyi opened a new pull request #11492: KAFKA-13452: MM2 shouldn't checkpoint when offset mapping is unavailable

viktorsomogyi opened a new pull request #11492:
URL: https://github.com/apache/kafka/pull/11492


   MM2 checkpointing reads the offset-syncs topic to create offset mappings for committed consumer group offsets. In some corner cases, it is possible that a mapping is not available in offset-syncs - in that case, MM2 simply copies the source offset, which might not be a valid offset in the replica topic at all. This can cause issues when auto offset sync is also turned on.
   Updated checkpointing logic to not create checkpoints for topic partitions without a valid offset mapping.
   
   ### Committer Checklist (excluded from commit message)
   - [ ] Verify design and implementation 
   - [ ] Verify test coverage and CI build status
   - [ ] Verify documentation (including upgrade notes)
   


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