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https://issues.apache.org/jira/browse/YARN-4108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wangda Tan updated YARN-4108:
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Attachment: YARN-4108.10.patch
Thanks [~jianhe] for such detailed reviews.
Attached ver.10 patch addressed all your comments except:
bq. may be check the queue resource here directly instead of this
isAllowPreemption flag?
I deliberately avoided this because we want to draw a border between LeafQueue
and ContainerAllocator, and with this we only need to check queue capacity once
for every LeafQueue allocation, otherwise we have to do this in each
application.
> CapacityScheduler: Improve preemption to preempt only those containers that
> would satisfy the incoming request
> --------------------------------------------------------------------------------------------------------------
>
> Key: YARN-4108
> URL: https://issues.apache.org/jira/browse/YARN-4108
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacity scheduler
> Reporter: Wangda Tan
> Assignee: Wangda Tan
> Attachments: YARN-4108-design-doc-V3.pdf,
> YARN-4108-design-doc-v1.pdf, YARN-4108-design-doc-v2.pdf, YARN-4108.1.patch,
> YARN-4108.10.patch, YARN-4108.2.patch, YARN-4108.3.patch, YARN-4108.4.patch,
> YARN-4108.5.patch, YARN-4108.6.patch, YARN-4108.7.patch, YARN-4108.8.patch,
> YARN-4108.9.patch, YARN-4108.poc.1.patch, YARN-4108.poc.2-WIP.patch,
> YARN-4108.poc.3-WIP.patch, YARN-4108.poc.4-WIP.patch
>
>
> This is sibling JIRA for YARN-2154. We should make sure container preemption
> is more effective.
> *Requirements:*:
> 1) Can handle case of user-limit preemption
> 2) Can handle case of resource placement requirements, such as: hard-locality
> (I only want to use rack-1) / node-constraints (YARN-3409) / black-list (I
> don't want to use rack1 and host\[1-3\])
> 3) Can handle preemption within a queue: cross user preemption (YARN-2113),
> cross applicaiton preemption (such as priority-based (YARN-1963) /
> fairness-based (YARN-3319)).
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