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From "Carlo Curino (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-1707) Making the CapacityScheduler more dynamic
Date Tue, 11 Feb 2014 00:44:33 GMT
Carlo Curino created YARN-1707:

             Summary: Making the CapacityScheduler more dynamic
                 Key: YARN-1707
                 URL: https://issues.apache.org/jira/browse/YARN-1707
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: capacityscheduler
            Reporter: Carlo Curino
            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-YYY)
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

We limit this to LeafQueues. 

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