[jira] [Created] (YARN-2378) Adding support for moving apps between queues in Capacity Scheduler

["Subramaniam Venkatraman Krishnan (JIRA)" <ji...@apache.org>]

Subramaniam Venkatraman Krishnan created YARN-2378:
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             Summary: Adding support for moving apps between queues in Capacity Scheduler
                 Key: YARN-2378
                 URL: https://issues.apache.org/jira/browse/YARN-2378
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: capacityscheduler
            Reporter: Subramaniam Venkatraman Krishnan
            Assignee: Carlo Curino


The CapacityScheduler is a rather static at the moment, and refreshqueue provides a rather heavy-handed way to reconfigure it. Moving towards long-running services (tracked in YARN-896) and to enable more advanced admission control and resource parcelling we need to make the CapacityScheduler more dynamic. This is instrumental to the umbrella jira YARN-1051.

Concretely this require the following changes:
* create queues dynamically
* destroy queues dynamically
* dynamically change queue parameters (e.g., capacity) 
* modify refreshqueue validation to enforce sum(child.getCapacity())<= 100% instead of ==100%

We limit this to LeafQueues. 



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