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From "Ajith S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5857) TestLogAggregationService.testFixedSizeThreadPool fails intermittently on trunk
Date Sat, 12 Nov 2016 13:24:58 GMT

    [ https://issues.apache.org/jira/browse/YARN-5857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15659659#comment-15659659
] 

Ajith S commented on YARN-5857:
-------------------------------

Guess this issue is result of test case relying on java.util.concurrent.ThreadPoolExecutor.getActiveCount()
As the javadoc for this method (https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ThreadPoolExecutor.html#getActiveCount()
) says, it return the approximate number at the moment.
I feel we can rewrite this testcase using countdown latches to make test case more robust,
please suggest

> TestLogAggregationService.testFixedSizeThreadPool fails intermittently on trunk
> -------------------------------------------------------------------------------
>
>                 Key: YARN-5857
>                 URL: https://issues.apache.org/jira/browse/YARN-5857
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Varun Saxena
>            Assignee: Ajith S
>            Priority: Minor
>
> {noformat}
> testFixedSizeThreadPool(org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.TestLogAggregationService)
 Time elapsed: 0.11 sec  <<< FAILURE!
> java.lang.AssertionError: expected:<3> but was:<2>
> 	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.yarn.server.nodemanager.containermanager.logaggregation.TestLogAggregationService.testFixedSizeThreadPool(TestLogAggregationService.java:1139)
> {noformat}
> Refer to https://builds.apache.org/job/PreCommit-YARN-Build/13829/testReport/



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