squah-confluent commented on code in PR #18046: URL: https://github.com/apache/kafka/pull/18046#discussion_r1871456806
########## group-coordinator/src/main/java/org/apache/kafka/coordinator/group/GroupMetadataManager.java: ########## @@ -1053,6 +1055,13 @@ ConsumerGroup convertToConsumerGroup(ClassicGroup classicGroup, List<Coordinator throw new GroupIdNotFoundException("Cannot upgrade the classic group " + classicGroup.groupId() + " to consumer group because the embedded consumer protocol is malformed."); + } catch (UnsupportedVersionException e) { + log.warn("Cannot upgrade the classic group " + classicGroup.groupId() + + " to consumer group: " + e.getMessage() + ".", e); + + throw new GroupIdNotFoundException("Cannot upgrade the classic group " + classicGroup.groupId() + + " to consumer group because a custom assignor with userData is in use. " + Review Comment: To clarify, which document should I direct users to? -- 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