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From Clark Breyman <cl...@breyman.com>
Subject Re: NullPointerException in broker on notification of ZK session end
Date Wed, 02 Apr 2014 23:00:30 GMT
Hey Tim. Small world :).

Kafka 0.8.1_2.10




On Wed, Apr 2, 2014 at 3:54 PM, Timothy Chen <tnachen@gmail.com> wrote:

> 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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