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From "Steve Loughran (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3848) RM to issue slots on a specific machine to users with admin rights
Date Fri, 10 Feb 2012 11:39:59 GMT
RM to issue slots on a specific machine to users with admin rights

                 Key: MAPREDUCE-3848
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3848
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: mrv2
    Affects Versions: 0.24.0
            Reporter: Steve Loughran
            Priority: Minor

The RM offers slots closest to the hosts that the AM ask for, based on which machine nearby
has space.

If you are using YARN to deploy admin-like applications (e.g. connectivity tests), you really
do need to deploy on a specific machine, even if that machine has no free slots.

It would be useful to have an option to say "always allocate on this machine if it is live",
and give access to that machine to admin users, even if there are no free slots on the server
for normal jobs. 

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