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https://issues.apache.org/jira/browse/YARN-6747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16191558#comment-16191558
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Miklos Szegedi commented on YARN-6747:
--------------------------------------
I was able to reproduce this. It happens because the main test thread and the
update thread both call update. Disabling the update thread helps to make the
test deterministic.
> TestFSAppStarvation.testPreemptionEnable fails intermittently
> -------------------------------------------------------------
>
> Key: YARN-6747
> URL: https://issues.apache.org/jira/browse/YARN-6747
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Sunil G
> Assignee: Miklos Szegedi
>
> *Error Message*
> Apps re-added even before starvation delay passed expected:<4> but was:<3>
> *Stacktrace*
> java.lang.AssertionError: Apps re-added even before starvation delay passed
> expected:<4> but was:<3>
> 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.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestFSAppStarvation.testPreemptionEnabled(TestFSAppStarvation.java:117)
> {code}
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