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https://issues.apache.org/jira/browse/HDFS-15327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17098214#comment-17098214
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Mingliang Liu commented on HDFS-15327:
--------------------------------------
Might be related to HDFS-15326. Linking it here.
> TestDataNodeErasureCodingMetrics.testReconstructionBytesPartialGroup3 fails
> intermittently
> ------------------------------------------------------------------------------------------
>
> Key: HDFS-15327
> URL: https://issues.apache.org/jira/browse/HDFS-15327
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode, erasure-coding, test
> Affects Versions: 3.4.0
> Reporter: Mingliang Liu
> Priority: Major
>
> Sample stack trace:
> {code}
> Error Message
> ecReconstructionBytesRead should be expected:<6501170> but was:<0>
> Stacktrace
> java.lang.AssertionError: ecReconstructionBytesRead should be
> expected:<6501170> but was:<0>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:834)
> at org.junit.Assert.assertEquals(Assert.java:645)
> at
> org.apache.hadoop.hdfs.server.datanode.TestDataNodeErasureCodingMetrics.testReconstructionBytesPartialGroup3(TestDataNodeErasureCodingMetrics.java:150)
> 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}
> Sample failing build:
> - https://builds.apache.org/job/PreCommit-HDFS-Build/29226/testReport/
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