[GitHub] [kafka] dengziming commented on a change in pull request #9571: KAFKA-10691: AlterIsr Respond with wrong Error Id

[GitBox <gi...@apache.org>]

dengziming commented on a change in pull request #9571:
URL: https://github.com/apache/kafka/pull/9571#discussion_r518554842



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File path: core/src/main/scala/kafka/controller/KafkaController.scala
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@@ -2261,7 +2261,7 @@ class KafkaController(val config: KafkaConfig,
     val brokerEpochOpt = controllerContext.liveBrokerIdAndEpochs.get(brokerId)
     if (brokerEpochOpt.isEmpty) {
       info(s"Ignoring AlterIsr due to unknown broker $brokerId")
-      callback.apply(Right(Errors.STALE_BROKER_EPOCH))
+      callback.apply(Right(Errors.UNKNOWN_MEMBER_ID))

Review comment:
       Thank you for your reply,  here we have 2 judgement. the first is `if (brokerEpochOpt.isEmpty)` and second is `if(!brokerEpochOpt.contains(brokerEpoch))`, they both return `STALE_BROKER_EPOCH `. maybe the first is meant to return`UNKNOWN_MEMBER_ID `.




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