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https://issues.apache.org/jira/browse/YARN-6249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15893722#comment-15893722
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Tao Jie commented on YARN-6249:
-------------------------------
Updated the patch for [~yufeigu]'s comments. And ran 200 times again without
failure.
> TestFairSchedulerPreemption is inconsistently failing on trunk
> --------------------------------------------------------------
>
> Key: YARN-6249
> URL: https://issues.apache.org/jira/browse/YARN-6249
> Project: Hadoop YARN
> Issue Type: Bug
> Components: fairscheduler, resourcemanager
> Affects Versions: 2.9.0
> Reporter: Sean Po
> Assignee: Tao Jie
> Attachments: YARN-6249.001.patch, YARN-6249.002.patch
>
>
> Tests in TestFairSchedulerPreemption.java will inconsistently fail on trunk.
> An example stack trace:
> {noformat}
> Tests run: 24, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 24.879 sec
> <<< FAILURE! - in
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairSchedulerPreemption
> testPreemptionSelectNonAMContainer[MinSharePreemptionWithDRF](org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairSchedulerPreemption)
> Time elapsed: 10.475 sec <<< FAILURE!
> java.lang.AssertionError: Incorrect number of containers on the greedy app
> expected:<4> but was:<8>
> 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.TestFairSchedulerPreemption.verifyPreemption(TestFairSchedulerPreemption.java:288)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairSchedulerPreemption.testPreemptionSelectNonAMContainer(TestFairSchedulerPreemption.java:363)
> {noformat}
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