Srikanth Kandula commented on YARN-4081:

Ease of expression is a great thing to have. So also is extending to multiple 
resources. That is all cool.

I am mostly worried about the performance impact of replacing a small 
datastructure that has native types with a much larger datastructure that has 
user-defined types.  Could you run a profile?  How much more space would a 
resource object take up now? How much more time would it take to initialize and 
garbage collect 10K resource objects?

> 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
>         Attachments: YARN-4081-YARN-3926.001.patch
> For adding support for multiple resource types, we need to add support for 
> this in the Resource class.

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