rreddy-22 commented on code in PR #14182:
URL: https://github.com/apache/kafka/pull/14182#discussion_r1316096433


##########
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/assignor/RangeAssignor.java:
##########
@@ -89,16 +93,17 @@ public MemberWithRemainingAssignments(String memberId, int 
remaining) {
     private Map<Uuid, List<String>> membersPerTopic(final AssignmentSpec 
assignmentSpec, final SubscribedTopicDescriber subscribedTopicDescriber) {
         Map<Uuid, List<String>> membersPerTopic = new HashMap<>();
         Map<String, AssignmentMemberSpec> membersData = 
assignmentSpec.members();
-
+        // Only add topic Ids to the map if they are present in the topic 
metadata.
         membersData.forEach((memberId, memberMetadata) -> {
             Collection<Uuid> topics = memberMetadata.subscribedTopicIds();
             for (Uuid topicId : topics) {
                 if (subscribedTopicDescriber.numPartitions(topicId) == -1) {
-                    throw new PartitionAssignorException("Member is subscribed 
to a non-existent topic");
+                    log.warn("Members are subscribed to topic " + topicId + " 
which doesn't exist in the topic metadata.");

Review Comment:
   Yep I'll raise a different PR for range assignor changes



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