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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-1197) Support changing resources of an allocated container
Date Sun, 17 Nov 2013 01:18:18 GMT

     [ https://issues.apache.org/jira/browse/YARN-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wangda Tan updated YARN-1197:
-----------------------------

    Attachment: yarn-1197-v4.pdf

I updated design doc mainly based on [~bikassaha] latest comment, 
I left "Add implementation to NM to support changing resource isolation limitation of a container"
blank in design doc. From my understanding, currently, LCE doesn't do any memory isolation
(right?), it will setup CPU share when it setup a container. Currently I don't have whole
picture of these component, solutions I can think are,
1) Because this is a soft limitation, we just don't do anything in LCE side
2) Create a new interface in ContainerExecutor, which can update resource of a container
3) Disable increase/shrink when LCE is selected
Hope to get your more opinions on this and design doc.

> 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: yarn-1197-v2.pdf, yarn-1197-v3.pdf, yarn-1197-v4.pdf, yarn-1197.pdf
>
>
> Currently, YARN cannot support merge several containers in one node to a big container,
which can make us incrementally ask resources, merge them to a bigger one, and launch our
processes. The user scenario is described in the comments.



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