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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-15275) Stuck thread while pulling data
Date Tue, 16 Feb 2016 14:33:18 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-15275.
---------------------------
    Resolution: Duplicate

Resolving as duplicate of HBASE-15140 Please try it and then if it does not work for you,
then open an issue. Thanks.

> Stuck thread while pulling data
> -------------------------------
>
>                 Key: HBASE-15275
>                 URL: https://issues.apache.org/jira/browse/HBASE-15275
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.1.2
>         Environment: CENT OS
>            Reporter: Arulanand Dayalan
>            Priority: Blocker
>
> I am trying to put data into an hbase table. It works for some time and gets stuck. Please
find the stack trace. Is this related to HBASE-15140 and can i apply the same fix.
> 2016-02-16 16:13:12
> Full thread dump Java HotSpot(TM) 64-Bit Server VM (24.79-b02 mixed mode):
> "hconnection-0x2c79c7b5-metaLookup-shared--pool2-t17" daemon prio=10 tid=0x00007f6ffc03b800
nid=0x2468 in Object.wait() [0x00007f7022e60000]
>    java.lang.Thread.State: TIMED_WAITING (on object monitor)
>         at java.lang.Object.wait(Native Method)
>         - waiting on <0x00000007d73f5570> (a java.util.concurrent.atomic.AtomicBoolean)
>         at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:168)
>         - locked <0x00000007d73f5570> (a java.util.concurrent.atomic.AtomicBoolean)
>         at org.apache.hadoop.hbase.client.ResultBoundedCompletionService$QueueingFuture.run(ResultBoundedCompletionService.java:64)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:745)
> "Attach Listener" daemon prio=10 tid=0x00007f701806a000 nid=0x242f waiting on condition
[0x0000000000000000]
>    java.lang.Thread.State: RUNNABLE
> "hconnection-0x2c79c7b5-metaLookup-shared--pool2-t16" daemon prio=10 tid=0x00007f6ffc03a000
nid=0x2421 waiting on condition [0x00007f7022b59000]
>    java.lang.Thread.State: TIMED_WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fc0009c0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2082)
>         at java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
>         at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:745)
> "ConsumerFetcherThread-metrics-consumer_blb44cehhdp064-1455618399743-42fd2113-0-0" prio=10
tid=0x00007f701c6a5000 nid=0x22aa waiting on condition [0x00007f70349e4000]
>    java.lang.Thread.State: WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fd0bfa60> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
>         at java.util.concurrent.LinkedBlockingQueue.put(LinkedBlockingQueue.java:349)
>         at kafka.consumer.PartitionTopicInfo.enqueue(PartitionTopicInfo.scala:60)
>         at kafka.consumer.ConsumerFetcherThread.processPartitionData(ConsumerFetcherThread.scala:49)
>         at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$1$$anonfun$apply$mcV$sp$2.apply(AbstractFetcherThread.scala:128)
>         at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$1$$anonfun$apply$mcV$sp$2.apply(AbstractFetcherThread.scala:109)
>         at scala.collection.immutable.Map$Map1.foreach(Map.scala:109)
>         at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$1.apply$mcV$sp(AbstractFetcherThread.scala:109)
>         at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$1.apply(AbstractFetcherThread.scala:109)
>         at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$1.apply(AbstractFetcherThread.scala:109)
>         at kafka.utils.Utils$.inLock(Utils.scala:535)
>         at kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:108)
>         at kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:86)
>         at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:60)
> "metrics-consumer_blb44cehhdp064-1455618399743-42fd2113-leader-finder-thread" prio=10
tid=0x00007f701408a000 nid=0x22a9 waiting on condition [0x00007f7023264000]
>    java.lang.Thread.State: WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fd14dd70> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
>         at kafka.consumer.ConsumerFetcherManager$LeaderFinderThread.doWork(ConsumerFetcherManager.scala:61)
>         at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:60)
> "kafkaProducer hbase - Thread-EventThread" daemon prio=10 tid=0x00007f6ffeaa8000 nid=0x2006
waiting on condition [0x00007f7022f61000]
>    java.lang.Thread.State: WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fd9d64a8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
>         at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
>         at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:494)
> "kafkaProducer hbase - Thread-SendThread(hadoopmasterbkup:2181)" daemon prio=10 tid=0x00007f6fff603000
nid=0x2005 runnable [0x00007f7023062000]
>    java.lang.Thread.State: RUNNABLE
>         at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
>         at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
>         at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79)
>         at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:87)
>         - locked <0x00000007fd9da0c0> (a sun.nio.ch.Util$2)
>         - locked <0x00000007fd9da0b0> (a java.util.Collections$UnmodifiableSet)
>         - locked <0x00000007fd9d9c48> (a sun.nio.ch.EPollSelectorImpl)
>         at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:98)
>         at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:349)
>         at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
> "kafkaProducer hbase - Thread" prio=10 tid=0x00007f6ffdc11000 nid=0x1fc9 in Object.wait()
[0x00007f7023162000]
>    java.lang.Thread.State: WAITING (on object monitor)
>         at java.lang.Object.wait(Native Method)
>         - waiting on <0x00000007d73f5450> (a [Lorg.apache.hadoop.hbase.client.ResultBoundedCompletionService$QueueingFuture;)
>         at java.lang.Object.wait(Object.java:503)
>         at org.apache.hadoop.hbase.client.ResultBoundedCompletionService.take(ResultBoundedCompletionService.java:148)
>         - locked <0x00000007d73f5450> (a [Lorg.apache.hadoop.hbase.client.ResultBoundedCompletionService$QueueingFuture;)
>         at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:188)
>         at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:59)
>         at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
>         at org.apache.hadoop.hbase.client.ClientSmallReversedScanner.loadCache(ClientSmallReversedScanner.java:211)
>         at org.apache.hadoop.hbase.client.ClientSmallReversedScanner.next(ClientSmallReversedScanner.java:185)
>         at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1249)
>         at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1155)
>         at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:370)
>         at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:321)
>         at org.apache.hadoop.hbase.client.BufferedMutatorImpl.backgroundFlushCommits(BufferedMutatorImpl.java:206)
>         at org.apache.hadoop.hbase.client.BufferedMutatorImpl.flush(BufferedMutatorImpl.java:183)
>         - locked <0x00000007fd9da940> (a org.apache.hadoop.hbase.client.BufferedMutatorImpl)
>         at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1449)
>         at org.apache.hadoop.hbase.client.HTable.put(HTable.java:1052)
>         at com.test.ceh.management.hbase.dao.impl.HbaseBaseDao.putAll(HbaseBaseDao.java:142)
>         at com.test.ceh.management.hbase.dao.impl.MetricsDao.putAll(MetricsDao.java:48)
>         at com.test.ceh.management.hbase.consumer.HbaseMetricsConsumer.consume(HbaseMetricsConsumer.java:30)
>         at com.test.ceh.management.runner.AdvancedRunnerImpl$ProcessorRunnable.invoke(AdvancedRunnerImpl.java:192)
>         at com.test.ceh.management.runner.AdvancedRunnerImpl$ProcessorRunnable.run(AdvancedRunnerImpl.java:158)
>         at java.lang.Thread.run(Thread.java:745)
> "metrics-consumer_blb44cehhdp064-1455618399743-42fd2113_watcher_executor" prio=10 tid=0x00007f6ffdf57800
nid=0x1fc7 waiting on condition [0x00007f7023365000]
>    java.lang.Thread.State: TIMED_WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fd14ba60> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2176)
>         at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener$$anon$1.run(ZookeeperConsumerConnector.scala:544)
> "kafka-consumer-scheduler-0" daemon prio=10 tid=0x00007f6ffc8c8800 nid=0x1fc6 waiting
on condition [0x00007f7023466000]
>    java.lang.Thread.State: TIMED_WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fd14ccc0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2082)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1090)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:807)
>         at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:745)
> "main-EventThread" daemon prio=10 tid=0x00007f6fffa83000 nid=0x1fc5 waiting on condition
[0x00007f7023567000]
>    java.lang.Thread.State: WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fd122e58> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
>         at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
>         at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:494)
> "main-SendThread(zookeeper1:2181)" daemon prio=10 tid=0x00007f6ffefd1000 nid=0x1fc4 runnable
[0x00007f7023668000]
>    java.lang.Thread.State: RUNNABLE
>         at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
>         at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
>         at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79)
>         at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:87)
>         - locked <0x00000007fd122800> (a sun.nio.ch.Util$2)
>         - locked <0x00000007fd1227f0> (a java.util.Collections$UnmodifiableSet)
>         - locked <0x00000007fd122390> (a sun.nio.ch.EPollSelectorImpl)
>         at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:98)
>         at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:349)
>         at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
> "ZkClient-EventThread-29-zookeeper1:2181,hbasemasterbkup:2181,hadoopmasterbkup:2181"
daemon prio=10 tid=0x00007f6fec309000 nid=0x1fc3 waiting on condition [0x00007f702386a000]
>    java.lang.Thread.State: WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fd14d9d8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
>         at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
>         at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:67)
> "metrics-meter-tick-thread-2" daemon prio=10 tid=0x00007f6ffe5c6800 nid=0x1fc2 waiting
on condition [0x00007f7023769000]
>    java.lang.Thread.State: WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fc8945e0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1085)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:807)
>         at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:745)
> "metrics-meter-tick-thread-1" daemon prio=10 tid=0x00007f6ffe9ff000 nid=0x1fc1 waiting
on condition [0x00007f7023b6c000]
>    java.lang.Thread.State: TIMED_WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fc8945e0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2082)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1090)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:807)
>         at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:745)
> "nagios kafka - Thread" prio=10 tid=0x00007f6ffe8fa000 nid=0x1fba waiting on condition
[0x00007f7023c6d000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>         at java.lang.Thread.sleep(Native Method)
>         at java.lang.Thread.sleep(Thread.java:340)
>         at com.test.ceh.management.runner.AdvancedRunnerImpl$ProcessorRunnable.run(AdvancedRunnerImpl.java:176)
>         at java.lang.Thread.run(Thread.java:745)
> "kafka-producer-network-thread | kafkaclient-1" daemon prio=10 tid=0x00007f6ffe8ec800
nid=0x1fb9 runnable [0x00007f7023d6e000]
>    java.lang.Thread.State: RUNNABLE
>         at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
>         at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
>         at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79)
>         at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:87)
>         - locked <0x00000007fd50e0e0> (a sun.nio.ch.Util$2)
>         - locked <0x00000007fd50e0d0> (a java.util.Collections$UnmodifiableSet)
>         - locked <0x00000007fd50dbf0> (a sun.nio.ch.EPollSelectorImpl)
>         at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:98)
>         at org.apache.kafka.common.network.Selector.select(Selector.java:328)
>         at org.apache.kafka.common.network.Selector.poll(Selector.java:218)
>         at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:192)
>         at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:191)
>         at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:122)
>         at java.lang.Thread.run(Thread.java:745)
> "Curator-Framework-0" daemon prio=10 tid=0x00007f6ffddf8800 nid=0x1fb7 waiting on condition
[0x00007f70341bc000]
>    java.lang.Thread.State: WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fd48f520> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
>         at java.util.concurrent.DelayQueue.take(DelayQueue.java:209)
>         at java.util.concurrent.DelayQueue.take(DelayQueue.java:68)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:780)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:62)
>         at org.apache.curator.framework.imps.CuratorFrameworkImpl$4.call(CuratorFrameworkImpl.java:257)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:262)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:745)
> "main-EventThread" daemon prio=10 tid=0x00007f6ffd350000 nid=0x1fb6 waiting on condition
[0x00007f70342bd000]
>    java.lang.Thread.State: WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fd48ed58> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
>         at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
>         at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:494)
> "main-SendThread(zookeeper1:2181)" daemon prio=10 tid=0x00007f6ffd3ba000 nid=0x1fb5 runnable
[0x00007f70343be000]
>    java.lang.Thread.State: RUNNABLE
>         at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
>         at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
>         at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79)
>         at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:87)
>         - locked <0x00000007fd48e6f0> (a sun.nio.ch.Util$2)
>         - locked <0x00000007fd48e6e0> (a java.util.Collections$UnmodifiableSet)
>         - locked <0x00000007fd48e280> (a sun.nio.ch.EPollSelectorImpl)
>         at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:98)
>         at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:349)
>         at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
> "Curator-ConnectionStateManager-0" daemon prio=10 tid=0x00007f6ffd1b6800 nid=0x1fb4 waiting
on condition [0x00007f70344bf000]
>    java.lang.Thread.State: WAITING (parking)
>         at sun.misc.Unsafe.park(Native Method)
>         - parking to wait for  <0x00000007fd4b7c18> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>         at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
>         at java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:374)
>         at org.apache.curator.framework.state.ConnectionStateManager.processEvents(ConnectionStateManager.java:245)
>         at org.apache.curator.framework.state.ConnectionStateManager.access$000(ConnectionStateManager.java:43)
>         at org.apache.curator.framework.state.ConnectionStateManager$1.call(ConnectionStateManager.java:111)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:262)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:745)
> "DestroyJavaVM" prio=10 tid=0x00007f7038009000 nid=0x1fa0 waiting on condition [0x0000000000000000]
>    java.lang.Thread.State: RUNNABLE
> "Service Thread" daemon prio=10 tid=0x00007f7038121800 nid=0x1fa9 runnable [0x0000000000000000]
>    java.lang.Thread.State: RUNNABLE
> "C2 CompilerThread1" daemon prio=10 tid=0x00007f703811f800 nid=0x1fa8 waiting on condition
[0x0000000000000000]
>    java.lang.Thread.State: RUNNABLE
> "C2 CompilerThread0" daemon prio=10 tid=0x00007f703811c800 nid=0x1fa7 waiting on condition
[0x0000000000000000]
>    java.lang.Thread.State: RUNNABLE
> "Signal Dispatcher" daemon prio=10 tid=0x00007f703811a000 nid=0x1fa6 runnable [0x0000000000000000]
>    java.lang.Thread.State: RUNNABLE
> "Finalizer" daemon prio=10 tid=0x00007f70380f1800 nid=0x1fa5 in Object.wait() [0x00007f703c508000]
>    java.lang.Thread.State: WAITING (on object monitor)
>         at java.lang.Object.wait(Native Method)
>         - waiting on <0x00000007fc08dbe0> (a java.lang.ref.ReferenceQueue$Lock)
>         at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
>         - locked <0x00000007fc08dbe0> (a java.lang.ref.ReferenceQueue$Lock)
>         at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
>         at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)
> "Reference Handler" daemon prio=10 tid=0x00007f70380ef800 nid=0x1fa4 in Object.wait()
[0x00007f703c609000]
>    java.lang.Thread.State: WAITING (on object monitor)
>         at java.lang.Object.wait(Native Method)
>         - waiting on <0x00000007fc05af88> (a java.lang.ref.Reference$Lock)
>         at java.lang.Object.wait(Object.java:503)
>         at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
>         - locked <0x00000007fc05af88> (a java.lang.ref.Reference$Lock)
> "VM Thread" prio=10 tid=0x00007f70380eb000 nid=0x1fa3 runnable
> "GC task thread#0 (ParallelGC)" prio=10 tid=0x00007f703801e800 nid=0x1fa1 runnable
> "GC task thread#1 (ParallelGC)" prio=10 tid=0x00007f7038020800 nid=0x1fa2 runnable
> "VM Periodic Task Thread" prio=10 tid=0x00007f703812c800 nid=0x1faa waiting on condition
> JNI global references: 147



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