jolshan commented on code in PR #13591:
URL: https://github.com/apache/kafka/pull/13591#discussion_r1181943662


##########
clients/src/main/java/org/apache/kafka/clients/producer/internals/TransactionManager.java:
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@@ -424,6 +477,11 @@ ProducerIdAndEpoch producerIdAndEpoch() {
     }
 
     synchronized public void maybeUpdateProducerIdAndEpoch(TopicPartition 
topicPartition) {
+        if (hasFatalError()) {

Review Comment:
   Looks like this updates the epoch and resets the sequence for inflight 
batches. I don't think it hurts to have this, but it may be good to confirm.



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