RM to issue slots on a specific machine to users with admin rights
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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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