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https://issues.apache.org/jira/browse/YARN-3434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14508134#comment-14508134
 ] 

Hadoop QA commented on YARN-3434:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  14m 42s | 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:red}-1{color} | whitespace |   0m  0s | The patch has 1  line(s) that 
end in whitespace. |
| {color:green}+1{color} | javac |   7m 32s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |   9m 34s | 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:red}-1{color} | checkstyle |   3m 57s | The applied patch generated  1 
 additional checkstyle issues. |
| {color:green}+1{color} | install |   1m 33s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m 15s | The patch does not introduce 
any new Findbugs (version 2.0.3) warnings. |
| {color:green}+1{color} | yarn tests |  51m 29s | Tests passed in 
hadoop-yarn-server-resourcemanager. |
| | |  90m 59s | |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12727350/YARN-3434.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 0ebe84d |
| whitespace | 
https://builds.apache.org/job/PreCommit-YARN-Build/7460/artifact/patchprocess/whitespace.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-YARN-Build/7460/artifact/patchprocess/checkstyle-result-diff.txt
 |
| hadoop-yarn-server-resourcemanager test log | 
https://builds.apache.org/job/PreCommit-YARN-Build/7460/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/7460/testReport/ |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/7460//console |


This message was automatically generated.

> Interaction between reservations and userlimit can result in significant ULF 
> violation
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-3434
>                 URL: https://issues.apache.org/jira/browse/YARN-3434
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 2.6.0
>            Reporter: Thomas Graves
>            Assignee: Thomas Graves
>         Attachments: YARN-3434.patch, YARN-3434.patch, YARN-3434.patch, 
> YARN-3434.patch, YARN-3434.patch, YARN-3434.patch, YARN-3434.patch
>
>
> ULF was set to 1.0
> User was able to consume 1.4X queue capacity.
> It looks like when this application launched, it reserved about 1000 
> containers, each 8G each, within about 5 seconds. I think this allowed the 
> logic in assignToUser() to allow the userlimit to be surpassed.



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