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https://issues.apache.org/jira/browse/YARN-3941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14640685#comment-14640685
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Hudson commented on YARN-3941:
------------------------------

SUCCESS: Integrated in Hadoop-Mapreduce-trunk-Java8 #263 (See 
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/263/])
YARN-3941. Proportional Preemption policy should try to avoid sending duplicate 
PREEMPT_CONTAINER event to scheduler. (Sunil G via wangda) (wangda: rev 
3bba1800513b38a4827f7552f348db87dc47c783)
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/TestProportionalCapacityPreemptionPolicy.java
* hadoop-yarn-project/CHANGES.txt
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/ProportionalCapacityPreemptionPolicy.java


> Proportional Preemption policy should try to avoid sending duplicate 
> PREEMPT_CONTAINER event to scheduler
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-3941
>                 URL: https://issues.apache.org/jira/browse/YARN-3941
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 2.7.1
>            Reporter: Sunil G
>            Assignee: Sunil G
>             Fix For: 2.8.0
>
>         Attachments: 0001-YARN-3941.patch
>
>
> Currently ProportionalCPP tries to send multiple PREEMPT_CONTAINER events to 
> scheduler during every cycle of preemption check till the container is either 
> forcefully killed or preempted by AM. 
> This can be throttled from ProportionalPreemptionPolicy to avoid excess of 
> events to scheduler.



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