lucasbru opened a new pull request, #20005: URL: https://github.com/apache/kafka/pull/20005
The test is resizing the __consumer_offset topic after broker start. This seems to be completely unsupported. The group coordinator fetches the number of partitions for the consumer offset topic once and never updates it. So we can be in a state where two brokers have a different understanding of how_ _consumer_offsets are partitioned. The result in this test can be that two group coordinators both think they own a certain group. The test is resizing __consumer_offsets right after start-up from 3 to 50. Before the broker bounce, the GC operates on only three partitions (0-2). During the bounce, we get new brokers that operate on (0-49). This means that two brokers can both think, at the same time, that they own a group. -- 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