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https://issues.apache.org/jira/browse/MAPREDUCE-2505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matei Zaharia updated MAPREDUCE-2505:
-------------------------------------

    Attachment: MAPREDUCE-2505-branch-0.20-security.patch

Here's a patch for 0.20.203, but I'm a bit confused about where the work is 
being done for the next release. Should I put this in the 0.20-security branch, 
or 0.20.203, or 0.20.204?

BTW I've decided to only commit this to the security branches because a) few 
people are likely to use new releases of 0.20.x and 0.21 and b) the security 
branches actually have security for the ACLs.

> Explain how to use ACLs in the fair scheduler
> ---------------------------------------------
>
>                 Key: MAPREDUCE-2505
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2505
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: contrib/fair-share, documentation
>    Affects Versions: 0.20.2, 0.20.203.0, 0.21.0, 0.22.0
>            Reporter: Matei Zaharia
>            Assignee: Matei Zaharia
>            Priority: Minor
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-2505-branch-0.20-security.patch, 
> MAPREDUCE-2505.patch
>
>
> The fair scheduler already works with the ACL system introduced through the 
> mapred.queue.* parameters, but the documentation doesn't explain how to use 
> this. We should add a paragraph or two about it.

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