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https://issues.apache.org/jira/browse/YARN-5783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15648966#comment-15648966
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Wangda Tan commented on YARN-5783:
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[~kasha], [~templedf],
Haven't looked at the patch, and not sure if you thought this before: could we
make the "app starvation level" as an general information which we can get from
different scheduler on YARN. Which can help 1) users to understand apps get
starved 2) scheduler can make decisions such as preemption.
Overall, I think "starved" should be a scheduler-agnostic scheduling state of
an app.
I'm not trying to stop what you're doing now, please go ahead with what you
have, I just wanted to share some ideas.
> Verify applications are identified starved
> ------------------------------------------
>
> Key: YARN-5783
> URL: https://issues.apache.org/jira/browse/YARN-5783
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: fairscheduler
> Affects Versions: 2.8.0
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Labels: oct16-medium
> Attachments: yarn-5783.YARN-4752.1.patch,
> yarn-5783.YARN-4752.2.patch, yarn-5783.YARN-4752.3.patch,
> yarn-5783.YARN-4752.4.patch, yarn-5783.YARN-4752.5.patch,
> yarn-5783.YARN-4752.6.patch, yarn-5783.YARN-4752.7.patch,
> yarn-5783.YARN-4752.8.patch
>
>
> JIRA to track unit tests to verify the identification of starved
> applications. An application should be marked starved only when:
> # Cluster allocation is over the configured threshold for preemption.
> # Preemption is enabled for a queue and any of the following:
> ## The queue is under its minshare for longer than minsharePreemptionTimeout
> ## One of the queue’s applications is under its fairshare for longer than
> fairsharePreemptionTimeout.
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