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https://issues.apache.org/jira/browse/YARN-4470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15068034#comment-15068034
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Steve Loughran commented on YARN-4470:
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talk to [~gsaha] about the work. Thinking more about it, one thing we can't
currently do is change the command line -jvm heap, cli arguments, etc. Having a
way to update in-place the AM launch context prior to triggering an AM restart
could address that
> Application Master in-place upgrade
> -----------------------------------
>
> Key: YARN-4470
> URL: https://issues.apache.org/jira/browse/YARN-4470
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: resourcemanager
> Reporter: Giovanni Matteo Fumarola
> Assignee: Giovanni Matteo Fumarola
> Attachments: AM in-place upgrade design. rev1.pdf
>
>
> It would be nice if clients could ask for an AM in-place upgrade.
> It will give to YARN the possibility to upgrade the AM, without losing the
> work
> done within its containers. This allows to deploy bug-fixes and new versions
> of the AM incurring in long service downtimes.
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