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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5265) Need an admin interface on history server with the ability to refresh super user groups,refresh user to group mappings,refresh admin acls,get groups given a username.
Date Tue, 18 Jun 2013 18:00:23 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13687014#comment-13687014
] 

Jason Lowe commented on MAPREDUCE-5265:
---------------------------------------

Ah yes, sorry I missed that point.  That makes me lean even more towards implementing this
via Hadoop Common RPC and straight protobufs (like what was done for the namenode equivalent
to this feature) than the YARN route.  If for some reason we do stay with the YARN RPC, we'll
need to put some MapReduce-specific prefix to the classes (e.g.: HistoryServerProtos becomes
MRHistoryServerProtos) to avoid collisions with protocol messages for the upcoming, generic
YARN history server.
                
> Need an admin interface on history server with the ability to refresh super user groups,refresh
user to group mappings,refresh admin acls,get groups given a username.
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5265
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5265
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: jobhistoryserver
>    Affects Versions: 2.1.0-beta
>            Reporter: Jason Lowe
>            Assignee: Ashwin Shankar
>         Attachments: JHS_REFRESH-2.txt, JHS_REFRESH-4.txt, JHS_REFRESH-6.txt
>
>
> The history server needs an admin interface with the ability to
> 1. refresh the super user groups configurations,
> 2. refresh user to group mappings,
> 3. refresh its admin acls,
> 4. get groups given a username 
> without requiring a restart of the history server.  This is analogous to the  -refreshSuperUserGroupsConfiguration
capabilities provided by hdfs dfsadmin and yarn rmadmin. 

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