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https://issues.apache.org/jira/browse/YARN-6249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16018085#comment-16018085
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Hadoop QA commented on YARN-6249:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m  
0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red}  0m  7s{color} 
| {color:red} YARN-6249 does not apply to trunk. Rebase required? Wrong Branch? 
See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | YARN-6249 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12855774/YARN-6249.002.patch |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/15983/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> TestFairSchedulerPreemption fails inconsistently.
> -------------------------------------------------
>
>                 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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