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https://issues.apache.org/jira/browse/HDFS-13339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17016240#comment-17016240
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Jim Brennan commented on HDFS-13339:
------------------------------------

Thanks [~weichiu]!  I think branch-2 is supposed to be deleted at some point...

> Volume reference can't be released and may lead to deadlock when DataXceiver 
> does a check volume
> ------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-13339
>                 URL: https://issues.apache.org/jira/browse/HDFS-13339
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>         Environment: os: Linux 2.6.32-358.el6.x86_64
> hadoop version: hadoop-3.2.0-SNAPSHOT
> unit: mvn test -Pnative 
> -Dtest=TestDataNodeVolumeFailureReporting#testVolFailureStatsPreservedOnNNRestart
>            Reporter: liaoyuxiangqin
>            Assignee: Zsolt Venczel
>            Priority: Critical
>              Labels: DataNode, volumes
>             Fix For: 3.2.0, 3.1.1, 3.0.4, 2.9.3, 2.10.1
>
>         Attachments: HDFS-13339-branch-2.10.001.patch, 
> HDFS-13339-branch-2.10.002.patch, HDFS-13339.001.patch, HDFS-13339.002.patch, 
> HDFS-13339.003.patch, HDFS-13339.004.patch
>
>
> When i execute Unit Test of
>  TestDataNodeVolumeFailureReporting#testVolFailureStatsPreservedOnNNRestart, 
> the process blocks on waitReplication, detail information as follows:
> [INFO] -------------------------------------------------------
>  [INFO] T E S T S
>  [INFO] -------------------------------------------------------
>  [INFO] Running 
> org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting
>  [ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 
> 307.492 s <<< FAILURE! - in 
> org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting
>  [ERROR] 
> testVolFailureStatsPreservedOnNNRestart(org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting)
>  Time elapsed: 307.206 s <<< ERROR!
>  java.util.concurrent.TimeoutException: Timed out waiting for /test1 to reach 
> 2 replicas
>  at org.apache.hadoop.hdfs.DFSTestUtil.waitReplication(DFSTestUtil.java:800)
>  at 
> org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting.testVolFailureStatsPreservedOnNNRestart(TestDataNodeVolumeFailureReporting.java:283)
>  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 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
>  at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>  at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
>  at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
>  at 
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
>  at 
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
>  at 
> org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)



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