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https://issues.apache.org/jira/browse/YARN-1676?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13888747#comment-13888747
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Vinod Kumar Vavilapalli commented on YARN-1676:
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The point of "refreshUserToGroupsMappings" call is that the user-to-group
mappings as returned by the GroupMappingProvider have changed (locally or
remotely). So the test should also simulate an addition/removal of a user's
group and validate the same after refresh.
> Make admin refreshUserToGroupsMappings of configuration work across RM
> failover
> -------------------------------------------------------------------------------
>
> Key: YARN-1676
> URL: https://issues.apache.org/jira/browse/YARN-1676
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Xuan Gong
> Assignee: Xuan Gong
> Attachments: YARN-1676.1.patch, YARN-1676.2.patch
>
>
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