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https://issues.apache.org/jira/browse/YARN-2826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14203463#comment-14203463
 ] 

Hudson commented on YARN-2826:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1951 (See 
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1951/])
YARN-2826. Fixed user-groups mappings' refresh bug caused by YARN-2826. 
Contributed by Wangda Tan. (vinodkv: rev 
df36edf751202db00d8f43103d7120ec56d70a04)
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
* hadoop-yarn-project/CHANGES.txt


> User-Group mappings not updated by RM when a user is removed from a group.
> --------------------------------------------------------------------------
>
>                 Key: YARN-2826
>                 URL: https://issues.apache.org/jira/browse/YARN-2826
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: sidharta seethana
>            Assignee: Wangda Tan
>            Priority: Critical
>             Fix For: 2.6.0
>
>         Attachments: YARN-2826-1.patch
>
>
> Removing a user from a group isn't reflected in getGroups even after a 
> refresh. The following sequence fails in step 7. 
> 1) add test_user to a machine with group1 
> 2) add test_user to group2 on the machine 
> 3) yarn rmadmin -refreshUserToGroupsMappings (expected to refresh user to 
> group mappings) 
> 4) yarn rmadmin -getGroups test_user (and ensure that user is in group2) 
> 5) remove user from group2 on the machine 
> 6) yarn rmadmin -refreshUserToGroupsMappings (expected to refresh user to 
> group mappings) 
> 7) yarn rmadmin -getGroups test_user (and ensure that user NOT in group2) 



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