jolshan commented on a change in pull request #11126:
URL: https://github.com/apache/kafka/pull/11126#discussion_r679404417
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File path: core/src/main/scala/kafka/server/ReplicaManager.scala
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@@ -1392,11 +1393,24 @@ class ReplicaManager(val config: KafkaConfig,
s"leader epoch $currentLeaderEpoch")
responseMap.put(topicPartition, Errors.STALE_CONTROLLER_EPOCH)
} else {
- stateChangeLogger.info(s"Ignoring LeaderAndIsr request from " +
- s"controller $controllerId with correlation id
$correlationId " +
- s"epoch $controllerEpoch for partition $topicPartition since
its associated " +
- s"leader epoch $requestLeaderEpoch matches the current
leader epoch")
- responseMap.put(topicPartition, Errors.STALE_CONTROLLER_EPOCH)
+ // The controller may send LeaderAndIsr to upgrade to using
topic IDs without bumping the epoch.
Review comment:
I originally put it there to explain why we had the case in the first
place, but it still gets the point across in the first case. I'll move it.
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