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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1197) Support changing resources of an allocated container
Date Tue, 10 Dec 2013 15:59:09 GMT

    [ https://issues.apache.org/jira/browse/YARN-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13844370#comment-13844370
] 

Bikas Saha commented on YARN-1197:
----------------------------------

There are some plumbing/infra related changes which we could commit to trunk safely. None
of that would be executed until some scheduler actually supports this. When that happens we
could decide to move the code to branch-2 to target a release. Would prefer that to a branch
which would need maintenance.

> 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
>            Assignee: Wangda Tan
>         Attachments: mapreduce-project.patch.ver.1, tools-project.patch.ver.1, yarn-1197-v2.pdf,
yarn-1197-v3.pdf, yarn-1197-v4.pdf, yarn-1197-v5.pdf, yarn-1197.pdf, yarn-api-protocol.patch.ver.1,
yarn-pb-impl.patch.ver.1, yarn-server-common.patch.ver.1, yarn-server-nodemanager.patch.ver.1,
yarn-server-resourcemanager.patch.ver.1
>
>
> 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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