Neelesh Srinivas Salian updated YARN-3996:
    Attachment: YARN-3996.002.patch

Resolved the issues with the Capacity, FIFO and SLS schedulers.

I am not sure how to approach the testing. Wrote a basic unit test for this at 
the moment.

Trying to think how to make it more robust.
Will update if I think of a sturdier approach.

In the meantime, requesting some feedback on version 002 of the patch.

Thank you.

> YARN-789 (Support for zero capabilities in fairscheduler) is broken after 
> YARN-3305
> -----------------------------------------------------------------------------------
>                 Key: YARN-3996
>                 URL: https://issues.apache.org/jira/browse/YARN-3996
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler, fairscheduler
>            Reporter: Anubhav Dhoot
>            Assignee: Neelesh Srinivas Salian
>            Priority: Critical
>         Attachments: YARN-3996.001.patch, YARN-3996.002.patch, 
> YARN-3996.prelim.patch
> RMAppManager#validateAndCreateResourceRequest calls into normalizeRequest 
> with mininumResource for the incrementResource. This causes normalize to 
> return zero if minimum is set to zero as per YARN-789

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