gabriellefu commented on code in PR #22788:
URL: https://github.com/apache/kafka/pull/22788#discussion_r3633346860


##########
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/streams/assignor/StickyTaskAssignor.java:
##########
@@ -98,33 +108,33 @@ private void initialize(final GroupSpec groupSpec, final 
TopologyDescriber topol
             if (topologyDescriber.isStateful(subtopology))
                 localState.totalTasks += numberOfPartitions * 
localState.numStandbyReplicas;
         }
-        localState.totalMembersWithActiveTaskCapacity = 
groupSpec.members().size();
-        localState.totalMembersWithTaskCapacity = groupSpec.members().size();
+        localState.totalMembersWithActiveTaskCapacity = 
groupSpec.memberIds().size();
+        localState.totalMembersWithTaskCapacity = groupSpec.memberIds().size();
         localState.activeTasksPerMember = 
computeTasksPerMember(localState.totalActiveTasks, 
localState.totalMembersWithActiveTaskCapacity);
         localState.totalTasksPerMember = 
computeTasksPerMember(localState.totalTasks, 
localState.totalMembersWithTaskCapacity);
 
         localState.processIdToState = new 
HashMap<>(localState.totalMembersWithActiveTaskCapacity);
         localState.activeTaskToPrevMember = new 
HashMap<>(localState.totalActiveTasks);
         localState.standbyTaskToPrevMember = new 
HashMap<>(localState.numStandbyReplicas > 0 ? (localState.totalTasks - 
localState.totalActiveTasks) / localState.numStandbyReplicas : 0);
-        for (final Map.Entry<String, AssignmentMemberSpec> memberEntry : 
groupSpec.members().entrySet()) {
-            final String memberId = memberEntry.getKey();
-            final String processId = memberEntry.getValue().processId();
+        for (final String memberId : groupSpec.memberIds()) {
+            final MemberAssignmentMetadata memberMetadata = 
groupSpec.memberMetadata(memberId);

Review Comment:
   changed, thanks



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