zhaohaidao commented on code in PR #14271: URL: https://github.com/apache/kafka/pull/14271#discussion_r1324884926
########## group-coordinator/src/test/java/org/apache/kafka/coordinator/group/GroupMetadataManagerTest.java: ########## @@ -431,14 +434,17 @@ public void rollback() { snapshotRegistry.revertToSnapshot(lastCommittedOffset); } + public void getOrCreateSnapshot() { + snapshotRegistry.getOrCreateSnapshot(lastCommittedOffset); + } Review Comment: This will cause testListGroups to fail because groupMetadataManager.listGroups always uses lastCommittedOffset to query. Putting getOrCreateSnapshot(lastWrittenOffset) at the beginning of the replay function will lead to the following result: the largest epoch in the snapshot is always 1 less than lastCommittedOffset. In this way, listGroups cannot find the expected results. Putting getOrCreateSnapshot(lastWrittenOffset) at the end of the function, especially after lastWrittenOffset+1, all cases can pass, which is consistent with the semantics of CoordinatorRuntime, that is, always update the memory first, then update lastWrittenOffset, and use the latest lastWrittenOffset to update snapshot. WDYT? -- 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