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From "MENG DING (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1197) Support changing resources of an allocated container
Date Thu, 28 May 2015 15:19:27 GMT

    [ https://issues.apache.org/jira/browse/YARN-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14563052#comment-14563052
] 

MENG DING commented on YARN-1197:
---------------------------------

Just wanted to add that if dominant resource calculator is being used, it may compare different
dimensions between target and current resource, but since we have the restriction that all
dimensions must be >= or <= for increase/decrease actions, there should be no conflicting
results. 

> 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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