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https://issues.apache.org/jira/browse/YARN-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14587174#comment-14587174
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Sandy Ryza commented on YARN-1197:
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Regarding complexity in the AM, the NMClient utility so far has been an API
that's fairly easy for app developers to interact with. I've used it more than
once and had no issues. Would we not be able to handle most of the additional
complexity behind it?
> 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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