lucasbru commented on code in PR #23004:
URL: https://github.com/apache/kafka/pull/23004#discussion_r3987859949
##########
streams/src/main/java/org/apache/kafka/streams/KafkaStreams.java:
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@@ -1527,9 +1629,20 @@ private Thread shutdownHelper(
// we don't attempt to join it and cause a deadlock
return new Thread(() -> {
// notify all the threads to stop; avoid deadlocks by stopping any
- // further state reports from the thread since we're shutting down
+ // further state reports from the thread since we're shutting down.
+ // A thread may already be shutting down (initiated by a removal
or a thread
+ // replacement), in which case shutdown() returns false. Closing
is an explicit
+ // client-level request whose group membership operation applies
to every thread,
+ // so record it on those threads too; every thread is joined below
regardless of
+ // who initiated its shutdown.
int numStreamThreads = processStreamThread(
- streamThread -> streamThread.shutdown(operation)
+ streamThread -> {
+ if (!streamThread.shutdown(operation)
+ &&
!streamThread.updateGroupMembershipOperation(operation)) {
Review Comment:
Makes sense. Yes, maybe the AI tool got a little carried away here.
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