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https://issues.apache.org/jira/browse/YARN-3941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14635421#comment-14635421
 ] 

Hadoop QA commented on YARN-3941:
---------------------------------

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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  15m 56s | Pre-patch trunk compilation is 
healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any 
@author tags. |
| {color:green}+1{color} | tests included |   0m  0s | The patch appears to 
include 1 new or modified test files. |
| {color:green}+1{color} | javac |   7m 43s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |   9m 33s | There were no new javadoc 
warning messages. |
| {color:green}+1{color} | release audit |   0m 22s | The applied patch does 
not increase the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   0m 48s | There were no new checkstyle 
issues. |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that 
end in whitespace. |
| {color:green}+1{color} | install |   1m 21s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 32s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m 26s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | yarn tests |  51m 29s | Tests passed in 
hadoop-yarn-server-resourcemanager. |
| | |  89m 14s | |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12746368/0001-YARN-3941.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 29cf887b |
| hadoop-yarn-server-resourcemanager test log | 
https://builds.apache.org/job/PreCommit-YARN-Build/8596/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/8596/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf902.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP 
PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/8596/console |


This message was automatically generated.

> 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
>         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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