FrankYang0529 opened a new pull request, #18945: URL: https://github.com/apache/kafka/pull/18945
There are two thread do poll. One is the main thread, another is the AbstractCoordinator#HeartbeatThread. The heartbeat thread is enabled after AbstractCoordinator receives JoinGroupResponse.In this case, we assume the first and second `coordinator.poll(time.timer(0))` don't get an active group, so the assignedCount is 1. However, if there is race condition, the joinFuture is completed by heartbeat thread. The `coordinator.poll(time.timer(0))` gets an active group and AbstractCoordinator#onJoinComplete is called twice, so the assignedCount is 2. ### 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
