Details
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Sub-task
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Status: Closed
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Major
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Resolution: Fixed
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None
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Reviewed
Description
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.