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From "Wei Yan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-2394) Fair Scheduler : ability to configure fairSharePreemptionThreshold per queue
Date Wed, 20 Aug 2014 23:03:27 GMT

     [ https://issues.apache.org/jira/browse/YARN-2394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wei Yan updated YARN-2394:
--------------------------

    Attachment: YARN-2394-2.patch

Update a patch following the same way as YARN-2395. Each queue inherits fairSharePreemptionThreshold
from its parent queue if it doesn't configure in the allocation file. Will rebase the patch
once YARN-2395 is in.

> Fair Scheduler : ability to configure fairSharePreemptionThreshold per queue
> ----------------------------------------------------------------------------
>
>                 Key: YARN-2394
>                 URL: https://issues.apache.org/jira/browse/YARN-2394
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: fairscheduler
>            Reporter: Ashwin Shankar
>            Assignee: Wei Yan
>         Attachments: YARN-2394-1.patch, YARN-2394-2.patch
>
>
> Preemption based on fair share starvation happens when usage of a queue is less than
50% of its fair share. This 50% is hardcoded. We'd like to make this configurable on a per
queue basis, so that we can choose the threshold at which we want to preempt. Calling this
config "fairSharePreemptionThreshold". 



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