Details
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Bug
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Status: Open
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Major
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Resolution: Unresolved
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2.5.0
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None
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None
Description
Fair scheduler should take app priorities into account while
preempting containers.
Attachments
Attachments
Issue Links
- relates to
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YARN-1963 Support priorities across applications within the same queue
- Resolved
Hi, Ashwin.
We have discussed a little bit about the priority and preemption in
YARN-596. The old preemption implementation is based on container's priority, andYARN-596starts to consider fairshare.Have one question here, consider all queues deploy fair share policy. By taking app priorities, if we want to preempt a container, which option do we deploy? (1) We collect all running apps from over-fairshare queues, and select the one with the lowest priority as the candidate, or (2) We firstly choose the queue which is most over its fair share, then the select the app with the lowest priority inside that queue as the candidate.