jolshan commented on code in PR #17022:
URL: https://github.com/apache/kafka/pull/17022#discussion_r2151075013
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clients/src/main/java/org/apache/kafka/clients/producer/internals/TransactionManager.java:
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@@ -779,14 +779,25 @@ public synchronized void
maybeTransitionToErrorState(RuntimeException exception)
}
synchronized void handleFailedBatch(ProducerBatch batch, RuntimeException
exception, boolean adjustSequenceNumbers) {
- maybeTransitionToErrorState(exception);
+ // Compare the batch with the current ProducerIdAndEpoch. If the
producer IDs are the *same* but the epochs
+ // are *different*, consider the batch as stale.
+ boolean isStaleBatch = batch.producerId() ==
producerIdAndEpoch.producerId && batch.producerEpoch() !=
producerIdAndEpoch.epoch;
Review Comment:
I think it is possible that these stale overflow cases unfortunately may
lead to having to close the producer, but I would prefer to look into that as a
potential followup. Seems like it would be very rare.
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