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From "Sreekanth Ramakrishnan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5396) Queue ACLs should be refreshed without requiring a restart of the job tracker
Date Thu, 09 Apr 2009 10:14:12 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5396?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Sreekanth Ramakrishnan updated HADOOP-5396:

    Attachment: hadoop-5396-2.patch

Attaching patch incorporating both Vinod's and Hemanths comments. 

Following changes have been made to {{QueueManager}}:
* Changed {{initalize(Configuration)}} to {{initialize()}} 
* Created a new method called {{refreshAcls()}} in {{QueueManager}} which only refreshes queue

Changed test cases to directly call QueueManager.refreshAcls instead of starting MiniMRCluster

> 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-5396-2.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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