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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1197) Support increasing resources of an allocated container
Date Tue, 17 Sep 2013 05:56:54 GMT

    [ https://issues.apache.org/jira/browse/YARN-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13769233#comment-13769233

Bikas Saha commented on YARN-1197:

Increasing resources for a container while in acquired state is not different from waiting
for some more time on the RM and allocating the larger container in the first attempt, right?
Also, the RM starts a timer for each acquired container and expects the container to be launched
on the NM before the timer expires. So we dont have too much time for the container to be
launched and thus we cannot wait for increasing the resources.
To be useful, we have to be able to increase the resources of a running container. I agree
that its a significant change. So making the change will need a more thorough investigation
and clear design proposal. Your help in making this happen is most welcome!
> Support increasing 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
> 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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