AndrewJSchofield opened a new pull request, #14835: URL: https://github.com/apache/kafka/pull/14835
In the new consumer, `Consumer.poll(Duration timeout)` blocks for the entire duration. If the consumer is joining a group and has not yet received its assignments, the poll begins before an assignment has yet been received. Because the poll is blocked, it does not notice when partitions are assigned, and it subsequently does not return any records. The old consumer only blocks for the duration of the heartbeat interval and loops for until the poll timeout has passed, and is thus able to check for assignments received. ### 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
