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https://issues.apache.org/jira/browse/HDFS-6589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14963306#comment-14963306
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Wei-Chiu Chuang commented on HDFS-6589:
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Unfortunately I can not reproduce the exception.
Initially I though it's a race condition, so I inserted Thread.yield() and also
tried to add Thread.sleep(), but still unable to reproduce it. I studied the
code but can not find a possible execution path for this to happen.
> TestDistributedFileSystem.testAllWithNoXmlDefaults failed intermittently
> ------------------------------------------------------------------------
>
> Key: HDFS-6589
> URL: https://issues.apache.org/jira/browse/HDFS-6589
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 2.5.0
> Reporter: Yongjun Zhang
> Assignee: Wei-Chiu Chuang
>
> https://builds.apache.org/job/PreCommit-HDFS-Build/7207 is clean
> https://builds.apache.org/job/PreCommit-HDFS-Build/7208 has the following
> failure. The code is essentially the same.
> Running the same test locally doesn't reproduce. A flaky test there.
> {code}
> Stacktrace
> java.lang.AssertionError: null
> at org.junit.Assert.fail(Assert.java:86)
> at org.junit.Assert.assertTrue(Assert.java:41)
> at org.junit.Assert.assertFalse(Assert.java:64)
> at org.junit.Assert.assertFalse(Assert.java:74)
> at
> org.apache.hadoop.hdfs.TestDistributedFileSystem.testDFSClient(TestDistributedFileSystem.java:263)
> at
> org.apache.hadoop.hdfs.TestDistributedFileSystem.testAllWithNoXmlDefaults(TestDistributedFileSystem.java:651)
> {code}
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