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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10448) Support pluggable mechanism to specify proxy user settings
Date Thu, 29 May 2014 20:51:02 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14012879#comment-14012879
] 

Arpit Agarwal commented on HADOOP-10448:
----------------------------------------

 Thanks for adding that Benoy. The code comment is useful as a note to future maintainers
that the behavior is intentional, since the 'almost singleton' behavior is confusing on first
read.

I will commit it on Jenkins +1.

> Support pluggable mechanism to specify proxy user settings
> ----------------------------------------------------------
>
>                 Key: HADOOP-10448
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10448
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: security
>    Affects Versions: 2.3.0
>            Reporter: Benoy Antony
>            Assignee: Benoy Antony
>         Attachments: HADOOP-10448.patch, HADOOP-10448.patch, HADOOP-10448.patch, HADOOP-10448.patch,
HADOOP-10448.patch, HADOOP-10448.patch, HADOOP-10448.patch, HADOOP-10448.patch, HADOOP-10448.patch,
HADOOP-10448.patch, HADOOP-10448.patch
>
>
> We have a requirement to support large number of superusers. (users who impersonate as
another user) (http://hadoop.apache.org/docs/r1.2.1/Secure_Impersonation.html) 
> Currently each  superuser needs to be defined in the core-site.xml via proxyuser settings.
This will be cumbersome when there are 1000 entries.
> It seems useful to have a pluggable mechanism to specify  proxy user settings with the
current approach as the default. 



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