dongnuo123 commented on code in PR #15442:
URL: https://github.com/apache/kafka/pull/15442#discussion_r1506768674


##########
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/GroupMetadataManager.java:
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@@ -1015,6 +1017,7 @@ private 
CoordinatorResult<ConsumerGroupHeartbeatResponseData, Record> consumerGr
 
         // Get or create the consumer group.
         boolean createIfNotExists = memberEpoch == 0;
+        maybeUpgradeEmptyGroup(groupId, records, false);

Review Comment:
   I think we can add check for migration config here which doesn't affect 
simple group upgrade.



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