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https://issues.apache.org/jira/browse/YARN-65?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15983346#comment-15983346
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Naganarasimha G R commented on YARN-65:
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Thanks for the clarification [~jlowe], may be i got confused because of your
earlier comment mentioning
{code}
when an application completes, replace the RMAppImpl object with something like
a RMCompletedAppImpl that in turn has references to RMCompletedAppAttemptImpl
rather than RMAppAttemptImpl.
{code}
But anyway as we are in same page we can take this forward now.
> Reduce RM app memory footprint once app has completed
> -----------------------------------------------------
>
> Key: YARN-65
> URL: https://issues.apache.org/jira/browse/YARN-65
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager
> Affects Versions: 0.23.3
> Reporter: Jason Lowe
> Assignee: Naganarasimha G R
>
> The ResourceManager holds onto a configurable number of completed
> applications (yarn.resource.max-completed-applications, defaults to 10000),
> and the memory footprint of these completed applications can be significant.
> For example, the {{submissionContext}} in RMAppImpl contains references to
> protocolbuffer objects and other items that probably aren't necessary to keep
> around once the application has completed. We could significantly reduce the
> memory footprint of the RM by releasing objects that are no longer necessary
> once an application completes.
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