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From "Bae, Jae Hyeon" <metac...@gmail.com>
Subject Re: Question on StateChangeFailedException
Date Sat, 08 Mar 2014 02:14:35 GMT
I started from a fresh but I deployed the working version synced from the
latest trunk, not a release version.

I just executed kafka.admin.TopicCommand with --create option.




On Fri, Mar 7, 2014 at 5:56 PM, Neha Narkhede <neha.narkhede@gmail.com>wrote:

> Starting from a fresh and working deployment, what admin commands or steps
> lead you to these errors? This error basically points to an unexpected
> state change, which could be a bug. I'm looking for steps to be able to
> reproduce the bug.
>
> Thanks,
> Neha
>
>
> On Fri, Mar 7, 2014 at 1:59 PM, Bae, Jae Hyeon <metacret@gmail.com> wrote:
>
> > How can I prevent these errors coming?
> >
> > When I created 9 partitions on 3 instances and 2 replication-factor, I
> > didn't have any error. But when I created 36 partitions on 12 instances,
> I
> > got these errors.
> >
> >
> > 2014-03-07 18:19:28,208] ERROR Controller 9 epoch 12 initiated state
> change
> > of replica 9 for partition [request_trace,3] from NonExistentReplica to
> > NewReplica failed (state.change.logger)
> > kafka.common.StateChangeFailedException: Replica 9 for partition
> > [request_trace,3] cannot be moved to NewReplicastate as it is being
> > requested to become leader
> >         at
> >
> >
> kafka.controller.ReplicaStateMachine.handleStateChange(ReplicaStateMachine.scala:160)
> >         at
> >
> >
> kafka.controller.ReplicaStateMachine$$anonfun$handleStateChanges$2.apply(ReplicaStateMachine.scala:96)
> >         at
> >
> >
> kafka.controller.ReplicaStateMachine$$anonfun$handleStateChanges$2.apply(ReplicaStateMachine.scala:96)
> >         at
> > scala.collection.immutable.HashSet$HashSet1.foreach(HashSet.scala:123)
> >         at
> > scala.collection.immutable.HashSet$HashTrieSet.foreach(HashSet.scala:322)
> >         at
> > scala.collection.immutable.HashSet$HashTrieSet.foreach(HashSet.scala:322)
> >         at
> >
> >
> kafka.controller.ReplicaStateMachine.handleStateChanges(ReplicaStateMachine.scala:96)
> >         at
> >
> >
> kafka.controller.KafkaController.onNewPartitionCreation(KafkaController.scala:464)
> >         at
> >
> >
> kafka.controller.KafkaController.onNewTopicCreation(KafkaController.scala:452)
> >         at
> >
> >
> kafka.controller.PartitionStateMachine$TopicChangeListener$$anonfun$handleChildChange$1.apply$mcV$sp(PartitionStateMachine.scala:421)
> >         at
> >
> >
> kafka.controller.PartitionStateMachine$TopicChangeListener$$anonfun$handleChildChange$1.apply(PartitionStateMachine.scala:403)
> >         at
> >
> >
> kafka.controller.PartitionStateMachine$TopicChangeListener$$anonfun$handleChildChange$1.apply(PartitionStateMachine.scala:403)
> >         at kafka.utils.Utils$.inLock(Utils.scala:538)
> >         at
> >
> >
> kafka.controller.PartitionStateMachine$TopicChangeListener.handleChildChange(PartitionStateMachine.scala:402)
> >         at org.I0Itec.zkclient.ZkClient$7.run(ZkClient.java:576)
> >         at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:71)
> >
>

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