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https://issues.apache.org/jira/browse/YARN-3643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14615081#comment-14615081
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Varun Saxena commented on YARN-3643:
------------------------------------

[~kasha], we have a test {{TestAppManager#testRMAppRetireZeroSetting}} to 
verify this case.
So closing this JIRA as invalid.

Kindly reopen if you disagree.

> Provide a way to store only running applications in the state store
> -------------------------------------------------------------------
>
>                 Key: YARN-3643
>                 URL: https://issues.apache.org/jira/browse/YARN-3643
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.7.0
>            Reporter: Karthik Kambatla
>            Assignee: Varun Saxena
>
> Today, we have a config that determines the number of applications that can 
> be stored in the state-store. Since there is no easy way to figure out the 
> maximum number of running applications at any point in time, users are forced 
> to use a conservative estimate. Our default ends up being even more 
> conservative.
> It would be nice to allow storing all running applications with a 
> conservative upper bound for it. This should allow for shorter recovery times 
> in most deployments. 



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