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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14474) DeadLock in RpcClientImpl.Connection.close()
Date Thu, 24 Sep 2015 06:28:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14905890#comment-14905890
] 

Hadoop QA commented on HBASE-14474:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12762044/hbase-14474_v3.patch
  against master branch at commit 5e26ae043dde217aeda29d9b67e290728adade89.
  ATTACHMENT ID: 12762044

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 hadoop versions{color}. The patch compiles with all supported hadoop versions
(2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.0 2.7.0 2.7.1)

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 protoc{color}.  The applied patch does not increase the total number of
protoc compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 checkstyle{color}.  The applied patch does not increase the total number
of checkstyle errors

    {color:green}+1 findbugs{color}.  The patch does not introduce any  new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

  {color:green}+1 site{color}.  The mvn post-site goal succeeds with this patch.

     {color:red}-1 core tests{color}.  The patch failed these unit tests:
     

     {color:red}-1 core zombie tests{color}.  There are 6 zombie test(s): 	at org.apache.hadoop.hbase.regionserver.TestHRegion.testFlushCacheWhileScanning(TestHRegion.java:3756)

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/15706//testReport/
Release Findbugs (version 2.0.3) 	warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/15706//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors: https://builds.apache.org/job/PreCommit-HBASE-Build/15706//artifact/patchprocess/checkstyle-aggregate.html

  Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/15706//console

This message is automatically generated.

> 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: 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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