Varun Vasudev commented on YARN-6789:

Strongly disagree with not having units. Today if a cluster wants to do 
scheduling in milliVcores, it requires updates to the RM, the NM and breaks 
*every* job that runs on the cluster because every job must be re-configured to 
run in milliVcores. Kubernetes has had support for units from the beginning, I 
don't see why YARN shouldn't have support for units as well.

> new api to get all supported resources from RM
> ----------------------------------------------
>                 Key: YARN-6789
>                 URL: https://issues.apache.org/jira/browse/YARN-6789
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Sunil G
>            Assignee: Sunil G
>         Attachments: YARN-6789-YARN-3926.001.patch
> It will be better to provide an api to get all supported resource types from 
> RM.

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