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