Andrew Ferguson commented on YARN-326:

[~sandyr] bingo. that was exactly the concern I alluded to before. glad we 
found it while thinking about the design. :-)

[~kkambatl] yup, that's the idea -- fractional min-share, which would be 
interpreted as a fraction of the dominant resource (which wouldn't be 
pre-specified, so the queue's dominant resource could adapt based on the jobs 
submitted) ... I wrote my example a bit quickly, sorry! let me know if 
something's still not clear.

the new plan sounds like a good approach. I like it.

> Add multi-resource scheduling to the fair scheduler
> ---------------------------------------------------
>                 Key: YARN-326
>                 URL: https://issues.apache.org/jira/browse/YARN-326
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: scheduler
>    Affects Versions: 2.0.2-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: FairSchedulerDRFDesignDoc.pdf, YARN-326.patch, 
> YARN-326.patch
> With YARN-2 in, the capacity scheduler has the ability to schedule based on 
> multiple resources, using dominant resource fairness.  The fair scheduler 
> should be able to do multiple resource scheduling as well, also using 
> dominant resource fairness.
> More details to come on how the corner cases with fair scheduler configs such 
> as min and max resources will be handled.

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