Manikandan R updated YARN-65:
    Attachment: YARN-65.006.patch

> 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
>         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
> 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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