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https://issues.apache.org/jira/browse/YARN-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14586139#comment-14586139
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MENG DING commented on YARN-1197:
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Had a very good discussion with [~leftnoteasy] at the Hadoop summit. We all
agreed that due to the complexity of the current design, it is worthwhile to
revisit the idea of increasing and decreasing container size both through
Resource Manager, that would at least eliminate the need for token expiration
logic, and also eliminate the need for AM-NM protocol and APIs. I am currently
working on the new design, and will post it for review when it is ready.
> 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.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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