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https://issues.apache.org/jira/browse/YARN-5057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15541747#comment-15541747
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Naganarasimha G R commented on YARN-5057:
-----------------------------------------
Thanks for the patch [~jlowe], encountered the same stack trace in YARN-4855
too. And seems like approach taken in the patch makes sense to me we wait for
10 seconds in a loop which is checking in a interval of 10 ms and throws the
exception, though later in the test case we try to assert the same.
So overall LGTM and +1 , if not further comments will commit it.
> resourcemanager.security.TestDelegationTokenRenewer fails in trunk
> ------------------------------------------------------------------
>
> Key: YARN-5057
> URL: https://issues.apache.org/jira/browse/YARN-5057
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Yongjun Zhang
> Assignee: Jason Lowe
> Attachments: YARN-5057.001.patch
>
>
> The following test seems to fail easily if not always:
> {code}
> -------------------------------------------------------
> T E S T S
> -------------------------------------------------------
> Running
> org.apache.hadoop.yarn.server.resourcemanager.security.TestDelegationTokenRenewer
> Tests run: 14, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 42.996 sec
> <<< FAILURE! - in
> org.apache.hadoop.yarn.server.resourcemanager.security.TestDelegationTokenRenewer
> testCancelWithMultipleAppSubmissions(org.apache.hadoop.yarn.server.resourcemanager.security.TestDelegationTokenRenewer)
> Time elapsed: 0.382 sec <<< FAILURE!
> 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.yarn.server.resourcemanager.security.TestDelegationTokenRenewer.testCancelWithMultipleAppSubmissions(TestDelegationTokenRenewer.java:1134)
> {code}
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