dajac opened a new pull request, #13843: URL: https://github.com/apache/kafka/pull/13843
The PartitionFetchState's lag field is set to None when the state is created and it is updated when bytes are received for a partition. For idle partitions (newly created or not), the lag is never updated because `validBytes > 0` is never true. As a side effect, the partition is considered out-of-sync and could be incorrectly throttled. ### Committer Checklist (excluded from commit message) - [ ] Verify design and implementation - [ ] Verify test coverage and CI build status - [ ] Verify documentation (including upgrade notes) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org