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From "Stephen O'Donnell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13375) o.a.h.security.TestGroupsCaching.testBackgroundRefreshCounters seems flaky
Date Wed, 20 Jul 2016 19:17:20 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15386469#comment-15386469
] 

Stephen O'Donnell commented on HADOOP-13375:
--------------------------------------------

Those exceptions going to stderr are expected in that test, as it is testing failed background
refreshes. The Guava docs say that exceptions are 'logged and swallowed'. I am hoping that
when running outside of junit those logs would be written to the namenode log file and not
stderr.

> o.a.h.security.TestGroupsCaching.testBackgroundRefreshCounters seems flaky
> --------------------------------------------------------------------------
>
>                 Key: HADOOP-13375
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13375
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security, test
>    Affects Versions: 2.8.0
>            Reporter: Mingliang Liu
>
> h5. Error Message
> bq. expected:<1> but was:<0>
> h5. Stacktrace
> {quote}
> java.lang.AssertionError: 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.junit.Assert.assertEquals(Assert.java:542)
> 	at org.apache.hadoop.security.TestGroupsCaching.testBackgroundRefreshCounters(TestGroupsCaching.java:638)
> {quote}



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