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https://issues.apache.org/jira/browse/HDFS-10434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15296112#comment-15296112
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Li Bo commented on HDFS-10434:
------------------------------
Thanks for [~rakeshr] finding the problem.
{{DFSTestUtil.waitForDatanodeState()}} and
{{StripedFileTestUtil.waitForReconstructionFinished()}} have make sure that the
reconstruction work is finished before checking the metrics. I am confused that
the two sentences not take effect. Does the failure never happen after
applying the patch(maybe run the test case more than 20 times)?
> Fix intermittent test failure of TestDataNodeErasureCodingMetrics
> -----------------------------------------------------------------
>
> Key: HDFS-10434
> URL: https://issues.apache.org/jira/browse/HDFS-10434
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Rakesh R
> Assignee: Rakesh R
> Attachments: HDFS-10434-00.patch
>
>
> This jira is to fix the test case failure.
> Reference :
> [Build15485_TestDataNodeErasureCodingMetrics_testEcTasks|https://builds.apache.org/job/PreCommit-HDFS-Build/15485/testReport/org.apache.hadoop.hdfs.server.datanode/TestDataNodeErasureCodingMetrics/testEcTasks/]
> {code}
> Error Message
> Bad value for metric EcReconstructionTasks expected:<1> but was:<0>
> Stacktrace
> java.lang.AssertionError: Bad value for metric EcReconstructionTasks
> expected:<1> but was:<0>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:743)
> at org.junit.Assert.assertEquals(Assert.java:118)
> at org.junit.Assert.assertEquals(Assert.java:555)
> at
> org.apache.hadoop.test.MetricsAsserts.assertCounter(MetricsAsserts.java:228)
> at
> org.apache.hadoop.hdfs.server.datanode.TestDataNodeErasureCodingMetrics.testEcTasks(TestDataNodeErasureCodingMetrics.java:92)
> {code}
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