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https://issues.apache.org/jira/browse/HBASE-14474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908775#comment-14908775
]
stack commented on HBASE-14474:
-------------------------------
Can we not commit any more changes here without unit test that first demos the
problem and proves the fix or the patch is run on cluster with loading that in
the past produced the issue?
> DeadLock in RpcClientImpl.Connection.close()
> ---------------------------------------------
>
> Key: HBASE-14474
> URL: https://issues.apache.org/jira/browse/HBASE-14474
> Project: HBase
> Issue Type: Bug
> Components: rpc
> Reporter: Enis Soztutar
> Assignee: Enis Soztutar
> Priority: Blocker
> Fix For: 2.0.0, 1.2.0, 1.0.3, 1.1.3
>
> Attachments: 14474-addendum-2.txt, 14474-addendum.txt,
> hbase-14474_v1.patch, hbase-14474_v2.patch, hbase-14474_v3.patch
>
>
> From a code base that contains 1.1.2 + HBASE-14449 + HBASE-14241 and
> HBASE-14313 we can reproduce a dead lock with serverKilling CM easily:
> {code}
> Found one Java-level deadlock:
> =============================
> "htable-pool1-t63":
> waiting to lock monitor 0x0000000001cb1688 (object 0x00000000806ef150, a
> org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection),
> which is held by "IPC Client (1403704789) connection to
> enis-hbase-sep-21-6.novalocal/172.22.107.106:16020 from root"
> "IPC Client (1403704789) connection to
> enis-hbase-sep-21-6.novalocal/172.22.107.106:16020 from root":
> waiting to lock monitor 0x0000000001cb1738 (object 0x00000000806f0c60, a
> java.lang.Object),
> which is held by "htable-pool1-t63"
> Java stack information for the threads listed above:
> ===================================================
> "htable-pool1-t63":
> at
> org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.close(RpcClientImpl.java:819)
> - waiting to lock <0x00000000806ef150> (a
> org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection)
> at
> org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.writeRequest(RpcClientImpl.java:906)
> - locked <0x00000000806f0c60> (a java.lang.Object)
> at
> org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.tracedWriteRequest(RpcClientImpl.java:856)
> at
> org.apache.hadoop.hbase.ipc.RpcClientImpl.call(RpcClientImpl.java:1192)
> at
> org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:213)
> at
> org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:287)
> at
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$BlockingStub.multi(ClientProtos.java:32699)
> at
> org.apache.hadoop.hbase.client.MultiServerCallable.call(MultiServerCallable.java:129)
> at
> org.apache.hadoop.hbase.client.MultiServerCallable.call(MultiServerCallable.java:54)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
> at
> org.apache.hadoop.hbase.client.AsyncProcess$AsyncRequestFutureImpl$SingleServerRequestRunnable.run(AsyncProcess.java:708)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> "IPC Client (1403704789) connection to
> enis-hbase-sep-21-6.novalocal/172.22.107.106:16020 from root":
> at
> org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.close(RpcClientImpl.java:832)
> - waiting to lock <0x00000000806f0c60> (a java.lang.Object)
> - locked <0x00000000806ef150> (a
> org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection)
> at
> org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.run(RpcClientImpl.java:574)
> {code}
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