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https://issues.apache.org/jira/browse/YARN-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14606218#comment-14606218
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Bikas Saha commented on YARN-1197:
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There has been a lot of discussion that looks like its converging. It would be 
helpful for the other interested (but not deeply involved) people, if there was 
an updated design document with details about the agreed upon design. Also, if 
this document could outline some of the intuition/logic behind the design 
choices (like going through AM for low latency) then it would super useful. 
Thanks!

> Support changing resources of an allocated container
> ----------------------------------------------------
>
>                 Key: YARN-1197
>                 URL: https://issues.apache.org/jira/browse/YARN-1197
>             Project: Hadoop YARN
>          Issue Type: Task
>          Components: api, nodemanager, resourcemanager
>    Affects Versions: 2.1.0-beta
>            Reporter: Wangda Tan
>         Attachments: YARN-1197 old-design-docs-patches-for-reference.zip, 
> YARN-1197_Design.2015.06.24.pdf, YARN-1197_Design.pdf
>
>
> The current YARN resource management logic assumes resource allocated to a 
> container is fixed during the lifetime of it. When users want to change a 
> resource 
> of an allocated container the only way is releasing it and allocating a new 
> container with expected size.
> Allowing run-time changing resources of an allocated container will give us 
> better control of resource usage in application side



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