Jason Lowe commented on YARN-2604:

How is this different from YARN-56?  Also wondering about the case of a 
heterogeneous cluster where only a few nodes are big enough to satisfy the 
request and they are temporarily unavailable.  Do we outright fail the request 
or hang around a bit to see if they return before failing?  The discussion in 
YARN-56 covers some of this.

> Scheduler should consider max-allocation-* in conjunction with the largest 
> node
> -------------------------------------------------------------------------------
>                 Key: YARN-2604
>                 URL: https://issues.apache.org/jira/browse/YARN-2604
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: scheduler
>    Affects Versions: 2.5.1
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
> If the scheduler max-allocation-* values are larger than the resources 
> available on the largest node in the cluster, an application requesting 
> resources between the two values will be accepted by the scheduler but the 
> requests will never be satisfied. The app essentially hangs forever. 

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