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https://issues.apache.org/jira/browse/YARN-4052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14961290#comment-14961290
 ] 

Hadoop QA commented on YARN-4052:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  22m 35s | 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 |  11m  2s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |  14m 10s | There were no new javadoc 
warning messages. |
| {color:green}+1{color} | release audit |   0m 33s | The applied patch does 
not increase the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   0m 29s | There were no new checkstyle 
issues. |
| {color:red}-1{color} | whitespace |   0m  0s | The patch has 1  line(s) that 
end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 59s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 46s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m  1s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | mapreduce tests |   0m 27s | Tests passed in 
hadoop-mapreduce-client-shuffle. |
| | |  53m  6s | |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12767111/YARN-4052.2.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 79b8d60 |
| whitespace | 
https://builds.apache.org/job/PreCommit-YARN-Build/9465/artifact/patchprocess/whitespace.txt
 |
| hadoop-mapreduce-client-shuffle test log | 
https://builds.apache.org/job/PreCommit-YARN-Build/9465/artifact/patchprocess/testrun_hadoop-mapreduce-client-shuffle.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/9465/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf907.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/9465/console |


This message was automatically generated.

> Set SO_KEEPALIVE on NM servers
> ------------------------------
>
>                 Key: YARN-4052
>                 URL: https://issues.apache.org/jira/browse/YARN-4052
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.7.1
>            Reporter: Nathan Roberts
>            Assignee: Chang Li
>         Attachments: YARN-4052.2.patch, YARN-4052.patch
>
>
> Shuffle handler does not set SO_KEEPALIVE so we've seen cases where 
> FDs/sockets get stuck in ESTABLISHED state indefinitely because the server 
> did not see the client leave (network cut or otherwise). 



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