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https://issues.apache.org/jira/browse/KAFKA-4595?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ismael Juma resolved KAFKA-4595.
--------------------------------
    Resolution: Fixed
      Assignee: Onur Karaman

> Controller send thread can't stop when broker change listener event trigger 
> for  dead brokers
> ---------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-4595
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4595
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.9.0.0, 0.10.1.1
>            Reporter: Pengwei
>            Assignee: Onur Karaman
>            Priority: Critical
>              Labels: reliability
>             Fix For: 0.11.0.0
>
>
> In our test env, we found controller is not working after a delete topic 
> opertation and network issue, the stack is below:
> "ZkClient-EventThread-15-192.168.1.3:2184,192.168.1.4:2184,192.168.1.5:2184" 
> #15 daemon prio=5 os_prio=0 tid=0x00007fb76416e000 nid=0x3019 waiting on 
> condition [0x00007fb76b7c8000]
>    java.lang.Thread.State: WAITING (parking)
>       at sun.misc.Unsafe.park(Native Method)
>       - parking to wait for  <0x00000000c05497b8> (a 
> java.util.concurrent.CountDownLatch$Sync)
>       at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
>       at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
>       at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
>       at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
>       at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:231)
>       at 
> kafka.utils.ShutdownableThread.awaitShutdown(ShutdownableThread.scala:50)
>       at kafka.utils.ShutdownableThread.shutdown(ShutdownableThread.scala:32)
>       at 
> kafka.controller.ControllerChannelManager.kafka$controller$ControllerChannelManager$$removeExistingBroker(ControllerChannelManager.scala:128)
>       at 
> kafka.controller.ControllerChannelManager.removeBroker(ControllerChannelManager.scala:81)
>       - locked <0x00000000c0258760> (a java.lang.Object)
>       at 
> kafka.controller.ReplicaStateMachine$BrokerChangeListener$$anonfun$handleChildChange$1$$anonfun$apply$mcV$sp$1$$anonfun$apply$mcV$sp$2.apply$mcVI$sp(ReplicaStateMachine.scala:369)
>       at 
> kafka.controller.ReplicaStateMachine$BrokerChangeListener$$anonfun$handleChildChange$1$$anonfun$apply$mcV$sp$1$$anonfun$apply$mcV$sp$2.apply(ReplicaStateMachine.scala:369)
>       at 
> kafka.controller.ReplicaStateMachine$BrokerChangeListener$$anonfun$handleChildChange$1$$anonfun$apply$mcV$sp$1$$anonfun$apply$mcV$sp$2.apply(ReplicaStateMachine.scala:369)
>       at scala.collection.immutable.Set$Set1.foreach(Set.scala:79)
>       at 
> kafka.controller.ReplicaStateMachine$BrokerChangeListener$$anonfun$handleChildChange$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(ReplicaStateMachine.scala:369)
>       at 
> kafka.controller.ReplicaStateMachine$BrokerChangeListener$$anonfun$handleChildChange$1$$anonfun$apply$mcV$sp$1.apply(ReplicaStateMachine.scala:359)
>       at 
> kafka.controller.ReplicaStateMachine$BrokerChangeListener$$anonfun$handleChildChange$1$$anonfun$apply$mcV$sp$1.apply(ReplicaStateMachine.scala:359)
>       at kafka.metrics.KafkaTimer.time(KafkaTimer.scala:33)
>       at 
> kafka.controller.ReplicaStateMachine$BrokerChangeListener$$anonfun$handleChildChange$1.apply$mcV$sp(ReplicaStateMachine.scala:358)
>       at 
> kafka.controller.ReplicaStateMachine$BrokerChangeListener$$anonfun$handleChildChange$1.apply(ReplicaStateMachine.scala:357)
>       at 
> kafka.controller.ReplicaStateMachine$BrokerChangeListener$$anonfun$handleChildChange$1.apply(ReplicaStateMachine.scala:357)
>       at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:262)
>       at 
> kafka.controller.ReplicaStateMachine$BrokerChangeListener.handleChildChange(ReplicaStateMachine.scala:356)
>       at org.I0Itec.zkclient.ZkClient$10.run(ZkClient.java:842)
>       at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:71)
>    Locked ownable synchronizers:
>       - <0x00000000c02587f8> (a 
> java.util.concurrent.locks.ReentrantLock$NonfairSync)
> "Controller-1001-to-broker-1003-send-thread" #88 prio=5 os_prio=0 
> tid=0x00007fb778342000 nid=0x5a4c waiting on condition [0x00007fb761de0000]
>    java.lang.Thread.State: WAITING (parking)
>       at sun.misc.Unsafe.park(Native Method)
>       - parking to wait for  <0x00000000c02587f8> (a 
> java.util.concurrent.locks.ReentrantLock$NonfairSync)
>       at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
>       at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
>       at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
>       at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
>       at 
> java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
>       at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
>       at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:260)
>       at 
> kafka.controller.TopicDeletionManager.kafka$controller$TopicDeletionManager$$deleteTopicStopReplicaCallback(TopicDeletionManager.scala:378)
>       at 
> kafka.controller.TopicDeletionManager$$anonfun$startReplicaDeletion$2$$anonfun$apply$3.apply(TopicDeletionManager.scala:345)
>       at 
> kafka.controller.TopicDeletionManager$$anonfun$startReplicaDeletion$2$$anonfun$apply$3.apply(TopicDeletionManager.scala:345)
>       at 
> kafka.controller.ControllerBrokerRequestBatch$$anonfun$addStopReplicaRequestForBrokers$2$$anonfun$apply$mcVI$sp$2.apply(ControllerChannelManager.scala:294)
>       at 
> kafka.controller.ControllerBrokerRequestBatch$$anonfun$addStopReplicaRequestForBrokers$2$$anonfun$apply$mcVI$sp$2.apply(ControllerChannelManager.scala:294)
>       at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:206)
>       - locked <0x00000000c04af988> (a java.lang.Object)
>       at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:63)
>    Locked ownable synchronizers:
>       - None



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