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From Timothy Chen <tnac...@gmail.com>
Subject Re: NullPointerException in broker on notification of ZK session end
Date Wed, 02 Apr 2014 22:54:58 GMT
Hi Clark,

What version of Kafka are you running this from?

Thanks,

Tim


On Wed, Apr 2, 2014 at 3:49 PM, Clark Breyman <clark@breyman.com> wrote:

> I'm seeing a lot of this in my logs on a non-controller broker:
>
> 2014-04-02 15:42:23,078] ERROR Error handling event ZkEvent[New session
> event sent to
> kafka.controller.KafkaController$SessionExpirationListener@204a18ac]
> (org.I0Itec.zkclient.ZkEventThread)
> java.lang.NullPointerException
> at
>
> kafka.controller.KafkaController$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)
>
>
> Is it associated with KAFKA-1310 or is it something else?
>
> It seems to be coming at the beginning of onControllerResignation, so non
> of the other shutdowns get triggered.
>

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