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  1. Kafka
  2. KAFKA-1271

controller logs exceptions during ZK session expiration

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.8.1
    • Fix Version/s: 0.8.1
    • Component/s: None
    • Labels:
      None

      Description

      Saw the following issues when there is ZK session expiration in the controller.

      1.
      ERROR Error handling event ZkEvent[Children of
      /admin/delete_topics changed sent to
      kafka.controller.PartitionStateMachine$DeleteTopicsListener@39abdac9]
      (org.I0Itec.zkclient.ZkEventThread)
      java.lang.NullPointerException
      at
      scala.collection.JavaConversions$JListWrapper.iterator(JavaConversions.scala:524)
      at scala.collection.IterableLike$class.foreach(IterableLike.scala:79)
      at
      scala.collection.JavaConversions$JListWrapper.foreach(JavaConversions.scala:521)
      at
      scala.collection.TraversableOnce$class.foldLeft(TraversableOnce.scala:176)
      at
      scala.collection.JavaConversions$JListWrapper.foldLeft(JavaConversions.scala:521)
      at
      scala.collection.TraversableOnce$class.$div$colon(TraversableOnce.scala:139)
      at
      scala.collection.JavaConversions$JListWrapper.$div$colon(JavaConversions.scala:521)
      at scala.collection.generic.Addable$class.$plus$plus(Addable.scala:54)
      at scala.collection.immutable.Set$EmptySet$.$plus$plus(Set.scala:47)
      at scala.collection.TraversableOnce$class.toSet(TraversableOnce.scala:436)
      at
      scala.collection.JavaConversions$JListWrapper.toSet(JavaConversions.scala:521)
      at
      kafka.controller.PartitionStateMachine$DeleteTopicsListener$$anonfun$handleChildChange$2.apply$mcV$sp(PartitionStateMachine.scala:448)
      at
      kafka.controller.PartitionStateMachine$DeleteTopicsListener$$anonfun$handleChildChange$2.apply(PartitionStateMachine.scala:445)
      at
      kafka.controller.PartitionStateMachine$DeleteTopicsListener$$anonfun$handleChildChange$2.apply(PartitionStateMachine.scala:445)
      at kafka.utils.Utils$.inLock(Utils.scala:538)
      at
      kafka.controller.PartitionStateMachine$DeleteTopicsListener.handleChildChange(PartitionStateMachine.scala:445)
      at org.I0Itec.zkclient.ZkClient$7.run(ZkClient.java:570)
      at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:71)

      2. IllegalStateException due to "Kafka scheduler has not been started".

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              • Assignee:
                junrao Jun Rao
                Reporter:
                junrao Jun Rao
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                Dates

                • Created:
                  Updated:
                  Resolved: