Karthik Kambatla commented on YARN-1011:

I have been thinking of this for a while now, and would like to drive this 
forward. [~elgoiri] has also expressed interest in collaborating on this. Let 
me work on a design doc with more details and upload here. Also, it might be 
prudent to work on a branch. 

> [Umbrella] RM should dynamically schedule containers based on utilization of 
> currently allocated containers
> -----------------------------------------------------------------------------------------------------------
>                 Key: YARN-1011
>                 URL: https://issues.apache.org/jira/browse/YARN-1011
>             Project: Hadoop YARN
>          Issue Type: New Feature
>            Reporter: Arun C Murthy
> Currently RM allocates containers and assumes resources allocated are 
> utilized.
> RM can, and should, get to a point where it measures utilization of allocated 
> containers and, if appropriate, allocate more (speculative?) containers.

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