Sangjin Lee commented on YARN-2131:

If I understand the rationale of this JIRA correctly, it is really about 
resetting the RM state store (clearing it entirely), not on a per-application 
basis. If we want to do this while the RM is up, then the command line option 
is more attractive. If we can afford to bring down the RM to do this, a startup 
option is ... an option.

> Add a way to nuke the RMStateStore
> ----------------------------------
>                 Key: YARN-2131
>                 URL: https://issues.apache.org/jira/browse/YARN-2131
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.4.0
>            Reporter: Karthik Kambatla
>            Assignee: Robert Kanter
> There are cases when we don't want to recover past applications, but recover 
> applications going forward. To do this, one has to clear the store. Today, 
> there is no easy way to do this and users should understand how each store 
> works.

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