mjsax commented on code in PR #22788:
URL: https://github.com/apache/kafka/pull/22788#discussion_r3642326897
##########
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/streams/TargetAssignmentBuilder.java:
##########
@@ -291,16 +298,25 @@ private TasksTuple newMemberAssignment(
) {
MemberAssignment newMemberAssignment =
newGroupAssignment.members().get(memberId);
if (newMemberAssignment != null) {
+ // Copy the maps returned by the assignor so the server does not
keep a reference to
+ // maps the assignor is free to mutate afterwards.
return new TasksTuple(
- newMemberAssignment.activeTasks(),
- newMemberAssignment.standbyTasks(),
- newMemberAssignment.warmupTasks()
+ copyTasks(newMemberAssignment.activeTasks()),
+ copyTasks(newMemberAssignment.standbyTasks()),
+ // Warm-up tasks are not assigned by the assignor; they are
decided during reconciliation.
+ Map.of()
Review Comment:
```suggestion
new HashMap()
```
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