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 <metac...@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) >
