hachikuji commented on code in PR #12968:
URL: https://github.com/apache/kafka/pull/12968#discussion_r1044670130


##########
core/src/main/scala/kafka/coordinator/transaction/ProducerIdManager.scala:
##########
@@ -167,7 +167,7 @@ class RPCProducerIdManager(brokerId: Int,
       if (nextProducerId > currentProducerIdBlock.lastProducerId) {
         val block = nextProducerIdBlock.poll(maxWaitMs, TimeUnit.MILLISECONDS)
         if (block == null) {
-          throw Errors.REQUEST_TIMED_OUT.exception("Timed out waiting for next 
producer ID block")

Review Comment:
   What I'm questioning is whether we want the exception to propagate all the 
way back to `KafakApis`, or if we want to handle it closer to the source. In 
other words, do we consider this an "unexpected" case?



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