Karthik Kambatla commented on YARN-2139:

[~leftnoteasy] - completely agree with both Arun and you on the 
spindle-locality-affinity front. The design doc hints at it, but doesn't cover 
it in as much detail as it should. I am all up for accomplishing that too here, 
I can work on fleshing out the locality-affinity pieces as we start getting the 
remaining parts in. 

I am considering starting the development on a feature-branch so we have a 
chance to change things before merging into trunk and branch-2.  Are people 
okay with that? 

> [Umbrella] Support for Disk as a Resource in YARN 
> --------------------------------------------------
>                 Key: YARN-2139
>                 URL: https://issues.apache.org/jira/browse/YARN-2139
>             Project: Hadoop YARN
>          Issue Type: New Feature
>            Reporter: Wei Yan
>         Attachments: Disk_IO_Scheduling_Design_1.pdf, 
> Disk_IO_Scheduling_Design_2.pdf, YARN-2139-prototype-2.patch, 
> YARN-2139-prototype.patch
> YARN should consider disk as another resource for (1) scheduling tasks on 
> nodes, (2) isolation at runtime, (3) spindle locality. 

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