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