Vinod Kumar Vavilapalli commented on YARN-2986:

The reason why I was pushing them all together in one hierarchy is this: If 
global options can be put at the top level, people end up sprinkling them all 
over the place and so searching for them becomes a problem (this exists today 
with the flat list of properties, in an extreme case). Forcing them into a 
single place hierarchy avoids this problem.

> Support hierarchical and unified scheduler configuration
> --------------------------------------------------------
>                 Key: YARN-2986
>                 URL: https://issues.apache.org/jira/browse/YARN-2986
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Wangda Tan
> Today's scheduler configuration is fragmented and non-intuitive, and needs to 
> be improved. Details in comments.

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