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https://issues.apache.org/jira/browse/GEODE-4650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16361195#comment-16361195
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Jason Huynh commented on GEODE-4650:
------------------------------------

Attached are the call stacks for the hung run.

> DLockService.clearGrantor can potentially hang
> ----------------------------------------------
>
>                 Key: GEODE-4650
>                 URL: https://issues.apache.org/jira/browse/GEODE-4650
>             Project: Geode
>          Issue Type: Bug
>          Components: distributed lock service
>            Reporter: Jason Huynh
>            Priority: Major
>         Attachments: callstacks-2018-02-10-05-25-15.txt, 
> callstacks-2018-02-10-05-25-23.txt, callstacks-2018-02-10-05-25-30.txt
>
>
> There was a test run in the precheckin pipeline that hung with the following 
> stack:
>  
> {code:java}
> "RMI TCP Connection(1)-172.17.0.3" #30 daemon prio=5 os_prio=0 
> tid=0x00007f4560001800 nid=0x191 waiting on condition [0x00007f45771c0000]
> java.lang.Thread.State: TIMED_WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00000000e082d298> (a 
> java.util.concurrent.CountDownLatch$Sync)
> at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
> at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1037)
> at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
> at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277)
> at 
> org.apache.geode.internal.util.concurrent.StoppableCountDownLatch.await(StoppableCountDownLatch.java:64)
> at 
> org.apache.geode.distributed.internal.ReplyProcessor21.basicWait(ReplyProcessor21.java:715)
> at 
> org.apache.geode.distributed.internal.ReplyProcessor21.waitForRepliesUninterruptibly(ReplyProcessor21.java:790)
> at 
> org.apache.geode.distributed.internal.ReplyProcessor21.waitForRepliesUninterruptibly(ReplyProcessor21.java:766)
> at 
> org.apache.geode.distributed.internal.ReplyProcessor21.waitForRepliesUninterruptibly(ReplyProcessor21.java:853)
> at 
> org.apache.geode.distributed.internal.locks.ElderInitProcessor.init(ElderInitProcessor.java:72)
> at 
> org.apache.geode.distributed.internal.locks.ElderState.<init>(ElderState.java:56)
> at 
> org.apache.geode.distributed.internal.ClusterDistributionManager.getElderStateWithTryLock(ClusterDistributionManager.java:3359)
> at 
> org.apache.geode.distributed.internal.ClusterDistributionManager.getElderState(ClusterDistributionManager.java:3309)
> at 
> org.apache.geode.distributed.internal.locks.GrantorRequestProcessor.startElderCall(GrantorRequestProcessor.java:238)
> at 
> org.apache.geode.distributed.internal.locks.GrantorRequestProcessor.basicOp(GrantorRequestProcessor.java:347)
> at 
> org.apache.geode.distributed.internal.locks.GrantorRequestProcessor.basicOp(GrantorRequestProcessor.java:327)
> at 
> org.apache.geode.distributed.internal.locks.GrantorRequestProcessor.clearGrantor(GrantorRequestProcessor.java:318)
> at 
> org.apache.geode.distributed.internal.locks.DLockService.clearGrantor(DLockService.java:872)
> at 
> org.apache.geode.distributed.internal.locks.DLockGrantor.destroy(DLockGrantor.java:1227)
> - locked <0x00000000e0837ff0> (a 
> org.apache.geode.distributed.internal.locks.DLockGrantor)
> at 
> org.apache.geode.distributed.internal.locks.DLockService.nullLockGrantorId(DLockService.java:646)
> at 
> org.apache.geode.distributed.internal.locks.DLockService.basicDestroy(DLockService.java:2358)
> at 
> org.apache.geode.distributed.internal.locks.DLockService.destroyAndRemove(DLockService.java:2276)
> - locked <0x00000000e05c7468> (a java.lang.Object)
> at 
> org.apache.geode.distributed.internal.locks.DLockService.destroyServiceNamed(DLockService.java:2214)
> at 
> org.apache.geode.distributed.DistributedLockService.destroy(DistributedLockService.java:84)
> at 
> org.apache.geode.internal.cache.GemFireCacheImpl.destroyGatewaySenderLockService(GemFireCacheImpl.java:2043)
> at 
> org.apache.geode.internal.cache.GemFireCacheImpl.close(GemFireCacheImpl.java:2180)
> - locked <0x00000000e04653e0> (a java.lang.Class for 
> org.apache.geode.internal.cache.GemFireCacheImpl)
> at 
> org.apache.geode.internal.cache.GemFireCacheImpl.close(GemFireCacheImpl.java:1960)
> at 
> org.apache.geode.internal.cache.GemFireCacheImpl.close(GemFireCacheImpl.java:1950)
> at 
> org.apache.geode.test.junit.rules.ServerStarterRule.stopMember(ServerStarterRule.java:99)
> at 
> org.apache.geode.test.junit.rules.MemberStarterRule.after(MemberStarterRule.java:81)
> at 
> org.apache.geode.test.dunit.rules.ClusterStartupRule.stopElementInsideVM(ClusterStartupRule.java:412)
> at 
> org.apache.geode.test.junit.rules.VMProvider.lambda$stopVM$fe0d42dc$1(VMProvider.java:35)
> at 
> org.apache.geode.test.junit.rules.VMProvider$$Lambda$53/208982926.run(Unknown 
> Source)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at hydra.MethExecutor.executeObject(MethExecutor.java:244)
> at 
> org.apache.geode.test.dunit.standalone.RemoteDUnitVM.executeMethodOnObject(RemoteDUnitVM.java:70)
> at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
> at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
> at sun.rmi.transport.Transport$1.run(Transport.java:200)
> at sun.rmi.transport.Transport$1.run(Transport.java:197)
> at java.security.AccessController.doPrivileged(Native Method)
> at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
> at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
> at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
> at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683)
> at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$7/1394836008.run(Unknown
>  Source)
> at java.security.AccessController.doPrivileged(Native Method)
> at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
> at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Locked ownable synchronizers:
> - <0x00000000e0332230> (a java.util.concurrent.ThreadPoolExecutor$Worker)
> - <0x00000000e08499b0> (a 
> java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync)
> - <0x00000000e08520f0> (a 
> java.util.concurrent.locks.ReentrantLock$NonfairSync)
> {code}
> It looks like the cache is shutting down and we are unable to destroy the 
> lock service for the gateway sender.
>  



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