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https://issues.apache.org/jira/browse/YARN-2448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14113344#comment-14113344
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Jian He commented on YARN-2448:
-------------------------------

looks good overall, thinking if it makes sense to use enum type to indicate the 
resource calculator type instead of returning class name, like adding an enum 
field into DefaultResourceCalculator class, because we can't rename these 
classes anymore if we choose to expose class name.

> RM should expose the name of the ResourceCalculator being used when AMs 
> register
> --------------------------------------------------------------------------------
>
>                 Key: YARN-2448
>                 URL: https://issues.apache.org/jira/browse/YARN-2448
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Varun Vasudev
>            Assignee: Varun Vasudev
>         Attachments: apache-yarn-2448.0.patch, apache-yarn-2448.1.patch
>
>
> The RM should expose the name of the ResourceCalculator being used when AMs 
> register, as part of the RegisterApplicationMasterResponse.
> This will allow applications to make better decisions when scheduling. 
> MapReduce for example, only looks at memory when deciding it's scheduling, 
> even though the RM could potentially be using the DominantResourceCalculator.



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