Yes. It shouldn't result in an NPE, though, right? -Jay
On Tue, Feb 18, 2014 at 5:20 PM, Jun Rao <jun...@gmail.com> wrote: > Do you see ZK session expiration in the log too? > > Thanks, > > Jun > > > On Tue, Feb 18, 2014 at 5:12 PM, Jay Kreps <jay.kr...@gmail.com> wrote: > > > I see this exception in the logs a lot when doing load testing. I haven't > > noticed any ill effect. Presumably related to the delete topic stuff? > > > > [2014-02-18 15:16:58,569] 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$$anonfun$handleChildChange$2.apply(PartitionStateMachine.scala:445) > > at kafka.utils.Utils$.inLock(Utils.scala:538) > > at > > > > > kafka.controller.PartitionStateMachine$DeleteTopicsListener.handleChildChange(PartitionStateMachine.scala:445) > > at org.I0Itec.zkclient.ZkClient$7.run(ZkClient.java:570) > > at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:71) > > [2014-02-18 15:16:58,609] ERROR Error handling event ZkEvent[Data of > > /controller changed sent to > > kafka.server.ZookeeperLeaderElector$LeaderChangeListener@69f94884] > > (org.I0Itec.zkclient.ZkEventThread) > > java.lang.IllegalStateException: Kafka scheduler has not been started > > at kafka.utils.KafkaScheduler.ensureStarted(KafkaScheduler.scala:116) > > at kafka.utils.KafkaScheduler.shutdown(KafkaScheduler.scala:86) > > at > > > > > kafka.controller.KafkaController$$anonfun$onControllerResignation$1.apply$mcV$sp(KafkaController.scala:338) > > 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$$anonfun$2.apply$mcV$sp(KafkaController.scala:162) > > at > > > > > kafka.server.ZookeeperLeaderElector$LeaderChangeListener$$anonfun$handleDataDeleted$1.apply$mcZ$sp(ZookeeperLeaderElector.scala:122) > > at > > > > > kafka.server.ZookeeperLeaderElector$LeaderChangeListener$$anonfun$handleDataDeleted$1.apply(ZookeeperLeaderElector.scala:118) > > at > > > > > kafka.server.ZookeeperLeaderElector$LeaderChangeListener$$anonfun$handleDataDeleted$1.apply(ZookeeperLeaderElector.scala:118) > > at kafka.utils.Utils$.inLock(Utils.scala:538) > > at > > > > > kafka.server.ZookeeperLeaderElector$LeaderChangeListener.handleDataDeleted(ZookeeperLeaderElector.scala:118) > > at org.I0Itec.zkclient.ZkClient$6.run(ZkClient.java:549) > > at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:71) > > >
