cadonna commented on code in PR #12465:
URL: https://github.com/apache/kafka/pull/12465#discussion_r984448633
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streams/src/main/java/org/apache/kafka/streams/processor/internals/StreamThread.java:
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@@ -1146,6 +1146,10 @@ private long advanceNowAndComputeLatency() {
public void shutdown() {
log.info("Informed to shut down");
final State oldState = setState(State.PENDING_SHUTDOWN);
+
+ // If the thread is already shutting down, this is a No-op.
+ if (oldState == State.PENDING_SHUTDOWN || oldState == State.DEAD)
return;
Review Comment:
Even if you check for `null`, `shutdown()` is also without that check a
no-op when the thread is already shutting down.
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