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https://issues.apache.org/jira/browse/YARN-3963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14641952#comment-14641952
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Hadoop QA commented on YARN-3963:
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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  16m  4s | 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 38s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |   9m 37s | There were no new javadoc 
warning messages. |
| {color:green}+1{color} | release audit |   0m 23s | The applied patch does 
not increase the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   0m 53s | 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 34s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | yarn tests |   1m 56s | Tests passed in 
hadoop-yarn-common. |
| | |  40m  1s | |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12747230/0002-YARN-3963.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 156f24e |
| hadoop-yarn-common test log | 
https://builds.apache.org/job/PreCommit-YARN-Build/8675/artifact/patchprocess/testrun_hadoop-yarn-common.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/8675/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf906.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/8675/console |


This message was automatically generated.

> AddNodeLabel on duplicate label addition shows success 
> -------------------------------------------------------
>
>                 Key: YARN-3963
>                 URL: https://issues.apache.org/jira/browse/YARN-3963
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Bibin A Chundatt
>            Assignee: Bibin A Chundatt
>            Priority: Minor
>         Attachments: 0001-YARN-3963.patch, 0002-YARN-3963.patch
>
>
> Currently as per the code in 
> {{CommonNodeLabelManager#addToClusterNodeLabels}} when we add same nodelabel 
> again event will not be fired so no updation is done. 
>  
> {noformat}
> ./yarn rmadmin –addToClusterNodeLabels x
> ./yarn rmadmin –addToClusterNodeLabels “x(exclusive=true)”
> ./yarn rmadmin –addToClusterNodeLabels “x(exclusive=false)”
>  {noformat}
> All these commands will give success when applied again through CLI 
>  
> {code}
> 2015-07-22 21:16:57,779 INFO 
> org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager: Add labels: 
> [<z:exclusivity=true>]
> 2015-07-22 21:16:57,779 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.RMAuditLogger: USER=dsperf   
> IP=10.19.92.117 OPERATION=addToClusterNodeLabels        TARGET=AdminService   
>   RESULT=SUCCESS
> 2015-07-22 21:17:06,431 INFO 
> org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager: Add labels: 
> [<z:exclusivity=false>]
> 2015-07-22 21:17:06,431 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.RMAuditLogger: USER=dsperf   
> IP=<IP> OPERATION=addToClusterNodeLabels        TARGET=AdminService     
> RESULT=SUCCESS
>  {code}
> Also since exclusive=true to false is not supported success is misleading



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