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https://issues.apache.org/jira/browse/YARN-2139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14220077#comment-14220077
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Karthik Kambatla commented on YARN-2139:
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It is very similar to vcores. vdisks is the number of virtual disks, no metric
just a number.
If we want to allow upto 'n' tasks to share a disk, {{vdisks = n * num-disks}}.
For cases with n > 1, spindle locality will help with ensuring all the 'n'
vdisks correspond to the same spindle(s).
> [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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