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Karthik Kambatla commented on YARN-2394:
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Just noticed that there is duplication between FSQueue#updatePreemptionParameters and QueueManager#setPreemptionParameters?
Can we get rid of one?
Other than that, I see a couple of lines over 80 chars in AllocationFileLoaderService.
> FairScheduler: 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, YARN-2394-3.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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