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https://issues.apache.org/jira/browse/HADOOP-5396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12697380#action_12697380
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Hemanth Yamijala commented on HADOOP-5396:
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Also as discussed, please log the call when the refresh comes to the 
jobtracker. The log should contain the user name who issued the refresh request.

> Queue ACLs should be refreshed without requiring a restart of the job tracker
> -----------------------------------------------------------------------------
>
>                 Key: HADOOP-5396
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5396
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Hemanth Yamijala
>            Assignee: Vinod K V
>         Attachments: cluster_setup.pdf, commands_manual.pdf, 
> hadoop-5396-1.patch, HADOOP-5396-3-svn.txt, HADOOP-5396-4-svn.txt
>
>
> In large shared deployments of the M/R clusters, it is normal that new users 
> will periodically want to get access to some queues on the M/R framework. 
> Requiring a JT restart for each such change is operationally inconvenient and 
> seems an overkill. There should be a way for updating ACLs with new users 
> without requiring a JT restart.

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