nicktelford opened a new pull request, #13993: URL: https://github.com/apache/kafka/pull/13993
When there are many topic-partitions being consumed by the application, the `rejoinNeededOrPending` method can perform poorly, due to the deep equality comparison of `metadataSnapshot` with `assignmentSnapshot`. Since these snapshots can only diverge in `maybeUpdateSubscriptionMetadata`, we can use a `boolean` to cache whether they are already known to be "dirty", and therefore need to be compared. This should shortcut the deep comparison in the common-case that the snapshot hasn't been updated. Fixes KAFKA-15178 ### 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
