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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2139) [Umbrella] Support for Disk as a Resource in YARN
Date Tue, 02 Dec 2014 21:14:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-2139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14232133#comment-14232133
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Bikas Saha commented on YARN-2139:
----------------------------------

Thanks for the update.
Its not clear to me how we are going to clearly de-couple 1) and 2) from 3). From first thoughts,
scheduling is what prevents over-allocation and the NM enforces the scheduling decision.
Could you please throw some light on 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_Isolation_Scheduling_3.pdf, 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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