dajac commented on code in PR #15847: URL: https://github.com/apache/kafka/pull/15847#discussion_r1588894836
########## group-coordinator/src/main/java/org/apache/kafka/coordinator/group/consumer/TargetAssignmentBuilder.java: ########## @@ -252,14 +252,16 @@ public TargetAssignmentResult build() throws PartitionAssignorException { if (updatedMemberOrNull == null) { memberSpecs.remove(memberId); } else { - ConsumerGroupMember member = members.get(memberId); - Assignment assignment; + Assignment assignment = targetAssignment.getOrDefault(memberId, Assignment.EMPTY); + // A new static member joins and needs to replace an existing departed one. - if (member == null && staticMembers.containsKey(updatedMemberOrNull.instanceId())) { - assignment = targetAssignment.getOrDefault(staticMembers.get(updatedMemberOrNull.instanceId()), Assignment.EMPTY); - } else { - assignment = targetAssignment.getOrDefault(memberId, Assignment.EMPTY); + if (updatedMemberOrNull.instanceId() != null) { + String previousMemberId = staticMembers.get(updatedMemberOrNull.instanceId()); + if (previousMemberId != null) { + assignment = targetAssignment.getOrDefault(updatedMemberOrNull.instanceId(), Assignment.EMPTY); Review Comment: Good catch! The unit actually worked because it uses the same id for both the member id and the static id. I have updated updated it. -- 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