kirktrue commented on code in PR #17022:
URL: https://github.com/apache/kafka/pull/17022#discussion_r2112721563


##########
clients/src/main/java/org/apache/kafka/clients/producer/internals/TransactionManager.java:
##########
@@ -737,14 +737,21 @@ public synchronized void 
maybeTransitionToErrorState(RuntimeException exception)
     }
 
     synchronized void handleFailedBatch(ProducerBatch batch, RuntimeException 
exception, boolean adjustSequenceNumbers) {
-        maybeTransitionToErrorState(exception);
+        if (!isStaleBatch(batch) && !hasFatalError())

Review Comment:
   I am asserting that we need the check for `!hasFatalError()` before calling 
`maybeTransitionToErrorState()` because without the check we could end up with 
the error listed above. My assertion is based off the unit test I wrote 
`testBatchesReceivedAfterFatalError()`.



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