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https://issues.apache.org/jira/browse/MAPREDUCE-1542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12839573#action_12839573
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Vinod K V commented on MAPREDUCE-1542:
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Allen, it is NOT assumed that both frameworks are owned by a single set of 
admins. Even though the configuration property is named the same, HDFS and 
MAPRED can both be configured separately to use different set of admins by 
setting the configuration separately in their own config files.

> Deprecate mapred.permissions.supergroup in favor of 
> hadoop.cluster.administrators
> ---------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1542
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1542
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: security
>            Reporter: Vinod K V
>             Fix For: 0.22.0
>
>
> HADOOP-6568 added the configuration {{hadoop.cluster.administrators}} through 
> which admins can configure who the superusers/supergroups for the cluster 
> are. MAPREDUCE itself already has {{mapred.permissions.supergroup}} (which is 
> just a single group). As agreed upon at HADOOP-6568, this should be 
> deprecated in favor of {{hadoop.cluster.administrators}}.

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