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https://issues.apache.org/jira/browse/HDFS-14677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16895746#comment-16895746
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Chen Zhang edited comment on HDFS-14677 at 7/30/19 3:56 AM:
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Thanks [~ayushtkn] [~elgoiri] for your comments
I've run the test repeatedly for 1000 times without the patch, it failed 3
times, and all these 3 failures are caused by NullPointerException.
After patch, it didn't fail.
was (Author: zhangchen):
Thanks [~ayushtkn] [~elgoiri] for your comments
I've run the test repeatedly for 1000 times without the patch, it failed 3
times. After patch, it didn't fail.
> TestDataNodeHotSwapVolumes#testAddVolumesConcurrently fails intermittently in
> trunk
> -----------------------------------------------------------------------------------
>
> Key: HDFS-14677
> URL: https://issues.apache.org/jira/browse/HDFS-14677
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Chen Zhang
> Assignee: Chen Zhang
> Priority: Major
> Attachments: HDFS-14677.001.patch
>
>
> Stacktrace:
> {code:java}
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.datanode.TestDataNodeHotSwapVolumes.testAddVolumesConcurrently(TestDataNodeHotSwapVolumes.java:615)
> 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$1.runReflectiveCall(FrameworkMethod.java:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at
> org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
> at
> org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> see:
> [https://builds.apache.org/job/PreCommit-HDFS-Build/27328/testReport/org.apache.hadoop.hdfs.server.datanode/TestDataNodeHotSwapVolumes/testAddVolumesConcurrently/]
> and
> [https://builds.apache.org/job/PreCommit-HDFS-Build/27312/testReport/org.apache.hadoop.hdfs.server.datanode/TestDataNodeHotSwapVolumes/testAddVolumesConcurrently/]
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