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https://issues.apache.org/jira/browse/KAFKA-1358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13958387#comment-13958387
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Timothy Chen commented on KAFKA-1358:
-------------------------------------
Created reviewboard https://reviews.apache.org/r/19972/
against branch origin/0.8.1
> Broker throws exception when reconnecting to zookeeper
> ------------------------------------------------------
>
> Key: KAFKA-1358
> URL: https://issues.apache.org/jira/browse/KAFKA-1358
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8.1
> Reporter: Timothy Chen
> Assignee: Timothy Chen
> Attachments: KAFKA-1358.patch
>
>
> A non-controller broker currently if zk session expires and re-established
> calls onControllerResignation even though it may not be the controller.
> The result is that the broker gets exception like this:
> java.lang.NullPointerException
> at
> kafka.controller.KafkaController$$anonfun$onControllerResignation$1.apply$mcV$sp(KafkaController.scala:340)
> at
> kafka.controller.KafkaController$$anonfun$onControllerResignation$1.apply(KafkaController.scala:337)
> at
> kafka.controller.KafkaController$$anonfun$onControllerResignation$1.apply(KafkaController.scala:337)
> at kafka.utils.Utils$.inLock(Utils.scala:538)
> at
> kafka.controller.KafkaController.onControllerResignation(KafkaController.scala:337)
> at
> kafka.controller.KafkaController$SessionExpirationListener$$anonfun$handleNewSession$1.apply$mcZ$sp(KafkaController.scala:1068)
> at
> kafka.controller.KafkaController$SessionExpirationListener$$anonfun$handleNewSession$1.apply(KafkaController.scala:1067)
> at
> kafka.controller.KafkaController$SessionExpirationListener$$anonfun$handleNewSession$1.apply(KafkaController.scala:1067)
> at kafka.utils.Utils$.inLock(Utils.scala:538)
> at
> kafka.controller.KafkaController$SessionExpirationListener.handleNewSession(KafkaController.scala:1067)
> at org.I0Itec.zkclient.ZkClient$4.run(ZkClient.java:472)
> at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:71)
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