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https://issues.apache.org/jira/browse/KAFKA-8532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16862772#comment-16862772
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leibo edited comment on KAFKA-8532 at 6/13/19 12:20 PM:
--------------------------------------------------------

[~te...@apache.org]  I saw you have handled KAFKA-6879, I wish you can help me 
to analysis this problem, thank you.


was (Author: lbdai3190):
[~te...@apache.org]   As you have handled KAFKA-6879, I wish you can help me to 
analysis this problem, thank you.

> controller-event-thread deadlock with zk-session-expiry-handler0
> ----------------------------------------------------------------
>
>                 Key: KAFKA-8532
>                 URL: https://issues.apache.org/jira/browse/KAFKA-8532
>             Project: Kafka
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 2.1.1
>            Reporter: leibo
>            Priority: Blocker
>         Attachments: js.log
>
>
> We have observed a serious deadlock between controller-event-thead and 
> zk-session-expirey-handle thread. When this issue occurred, it's only one way 
> to recovery the kafka cluster is restart kafka server. The  follows is the 
> jstack log of controller-event-thead and zk-session-expiry-handle thread.
> "zk-session-expiry-handler0" #163089 daemon prio=5 os_prio=0 
> tid=0x00007fcc9c010000 nid=0xfb22 waiting on condition [0x00007fcbb01f8000]
>  java.lang.Thread.State: WAITING (parking)
>  at sun.misc.Unsafe.park(Native Method)
>  - parking to wait for <0x00000005ee3f7000> (a 
> java.util.concurrent.CountDownLatch$Sync)
>  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:231) // 
> 等待controller-event-thread线程处理expireEvent
>  at 
> kafka.controller.KafkaController$Expire.waitUntilProcessingStarted(KafkaController.scala:1533)
>  at 
> kafka.controller.KafkaController$$anon$7.beforeInitializingSession(KafkaController.scala:173)
>  at 
> kafka.zookeeper.ZooKeeperClient.callBeforeInitializingSession(ZooKeeperClient.scala:408)
>  at 
> kafka.zookeeper.ZooKeeperClient.$anonfun$reinitialize$1(ZooKeeperClient.scala:374)
>  at 
> kafka.zookeeper.ZooKeeperClient.$anonfun$reinitialize$1$adapted(ZooKeeperClient.scala:374)
>  at kafka.zookeeper.ZooKeeperClient$$Lambda$1473/1823438251.apply(Unknown 
> Source)
>  at scala.collection.Iterator.foreach(Iterator.scala:937)
>  at scala.collection.Iterator.foreach$(Iterator.scala:937)
>  at scala.collection.AbstractIterator.foreach(Iterator.scala:1425)
>  at scala.collection.MapLike$DefaultValuesIterable.foreach(MapLike.scala:209)
>  at kafka.zookeeper.ZooKeeperClient.reinitialize(ZooKeeperClient.scala:374)
>  at 
> kafka.zookeeper.ZooKeeperClient.$anonfun$scheduleSessionExpiryHandler$1(ZooKeeperClient.scala:428)
>  at 
> kafka.zookeeper.ZooKeeperClient$$Lambda$1471/701792920.apply$mcV$sp(Unknown 
> Source)
>  at kafka.utils.KafkaScheduler.$anonfun$schedule$2(KafkaScheduler.scala:114)
>  at kafka.utils.KafkaScheduler$$Lambda$198/1048098469.apply$mcV$sp(Unknown 
> Source)
>  at kafka.utils.CoreUtils$$anon$1.run(CoreUtils.scala:63)
>  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>  at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
>  at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
>  at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>  at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>  at java.lang.Thread.run(Thread.java:748)
> Locked ownable synchronizers:
>  - <0x0000000661e8d2e0> (a java.util.concurrent.ThreadPoolExecutor$Worker)
> "controller-event-thread" #51 prio=5 os_prio=0 tid=0x00007fceaeec4000 
> nid=0x310 waiting on condition [0x00007fccb55c8000]
>  java.lang.Thread.State: WAITING (parking)
>  at sun.misc.Unsafe.park(Native Method)
>  - parking to wait for <0x00000005d1be5a00> (a 
> java.util.concurrent.CountDownLatch$Sync)
>  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:231)
>  at kafka.zookeeper.ZooKeeperClient.handleRequests(ZooKeeperClient.scala:157)
>  at 
> kafka.zk.KafkaZkClient.retryRequestsUntilConnected(KafkaZkClient.scala:1596)
>  at 
> kafka.zk.KafkaZkClient.kafka$zk$KafkaZkClient$$retryRequestUntilConnected(KafkaZkClient.scala:1589)
>  at 
> kafka.zk.KafkaZkClient.deletePreferredReplicaElection(KafkaZkClient.scala:989)
>  at 
> kafka.controller.KafkaController.removePartitionsFromPreferredReplicaElection(KafkaController.scala:873)
>  at 
> kafka.controller.KafkaController.kafka$controller$KafkaController$$onPreferredReplicaElection(KafkaController.scala:631)
>  at 
> kafka.controller.KafkaController.onControllerFailover(KafkaController.scala:266)
>  at 
> kafka.controller.KafkaController.kafka$controller$KafkaController$$elect(KafkaController.scala:1221)
>  at 
> kafka.controller.KafkaController$Reelect$.process(KafkaController.scala:1508)
>  at 
> kafka.controller.KafkaController$RegisterBrokerAndReelect$.process(KafkaController.scala:1517)
>  at 
> kafka.controller.ControllerEventManager$ControllerEventThread.$anonfun$doWork$1(ControllerEventManager.scala:89)
>  at 
> kafka.controller.ControllerEventManager$ControllerEventThread$$Lambda$362/918424570.apply$mcV$sp(Unknown
>  Source)
>  at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)
>  at kafka.metrics.KafkaTimer.time(KafkaTimer.scala:31)
>  at 
> kafka.controller.ControllerEventManager$ControllerEventThread.doWork(ControllerEventManager.scala:89)
>  at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:82)
> Locked ownable synchronizers:
>  - None



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