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https://issues.apache.org/jira/browse/YARN-65?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16189338#comment-16189338
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Naganarasimha G R commented on YARN-65:
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Thanks for reviewing and committing the patch [~rohithsharma], but was
wondering why not for 2.7 branch (2.7.5 version release) too, as many want to
store more applications in the absence of reliable ATS in the existing deployed
clusters. Thoughts?
> 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: Manikandan R
> Fix For: 2.9.0, 3.0.0-beta1, 3.1.0
>
> Attachments: YARN-65.001.patch, YARN-65.002.patch, YARN-65.003.patch,
> YARN-65.004.patch, YARN-65.005.patch, YARN-65.006.patch, YARN-65.007.patch,
> YARN-65.008.patch, YARN-65.009.patch, YARN-65.010.patch, YARN-65.011.patch,
> YARN-65.012.patch, YARN-65.013.patch, YARN-65.014.patch, YARN-65.015.patch
>
>
> 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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