Rohith Sharma K S commented on YARN-4373:

I am seriously surprised with this issue where applications can not be found in 
{{rmcontext}} during recovery. Currently, Active services will not get started 
as long as recovery finishes which means none of the ports are open to listen. 
Once applications are recovery either it can be completed apps or running, both 
are added to {{rmcontext}}.
Would you provide full RM logs for this issue? 

> Jobs can be temporarily forgotten during recovery
> -------------------------------------------------
>                 Key: YARN-4373
>                 URL: https://issues.apache.org/jira/browse/YARN-4373
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.7.1
>            Reporter: Daniel Templeton
>            Assignee: Daniel Templeton
>            Priority: Critical
> The RM becomes available to service requests before state store recovery is 
> started.  Before recovery and during the recovery period, it's possible for a 
> client to request an application report for a running application to which 
> the RM will respond that the application in unknown.
> I'm seeing this issue with Oozie during an RM failover.  Until the active 
> finishes recovery, it reports erroneous information to Oozie, which doesn't 
> have context to know that it should just try again later.

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