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https://issues.apache.org/jira/browse/YARN-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13784012#comment-13784012
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Wangda Tan commented on YARN-1197:
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To [~tucu00],
I think the heap size change (Xmx, etc.) of running JVM based container is not
totally related to this topic. If user want to change a JVM-based container
size, he/she may use a "watcher" process launch the "worker" process in a
container, and relaunch the "worker" process with different JVM parameters if
needed.
In a word, if we cannot solve this in language side, we can solve it in
application side.
> 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.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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