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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4081) Add support for multiple resource types in the Resource class
Date Wed, 02 Aug 2017 22:37:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-4081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16111855#comment-16111855

Daniel Templeton commented on YARN-4081:

I have a question about the {{UnitsConversionUtil}} added in this patch and units in resource
types in general.  As far as I can tell, we only convert units when attempting to compare
{{Resource}} instances (or {{ResourceInformation}} instances to the same effect).  We do the
conversion when the units for a resource type in one {{Resource}} instance don't match the
units for that resource type in the other {{Resource}} instance.  The units for the resource
types are set globally by the {{ResourceUtils}} class, so they can't ever differ across {{Resource}}
instances.  As far as I can tell, units are really just flags we attach to a resource type
to give the user additional information.  We don't seem to use them for any actual purpose
in the code.  Am I missing something?

> Add support for multiple resource types in the Resource class
> -------------------------------------------------------------
>                 Key: YARN-4081
>                 URL: https://issues.apache.org/jira/browse/YARN-4081
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Varun Vasudev
>            Assignee: Varun Vasudev
>             Fix For: YARN-3926
>         Attachments: YARN-4081-YARN-3926.001.patch, YARN-4081-YARN-3926.002.patch, YARN-4081-YARN-3926.003.patch,
YARN-4081-YARN-3926.004.patch, YARN-4081-YARN-3926.005.patch, YARN-4081-YARN-3926.006.patch,
YARN-4081-YARN-3926.007.patch, YARN-4081-YARN-3926.008.patch
> For adding support for multiple resource types, we need to add support for this in the
Resource class.

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