Steve Loughran commented on YARN-1695:

Now that the functionality is in, is there going to be a replacement for 
{{YarnClientImpl}} which we can use to switch to the REST APIs? I can't see an 
issue for it.

> Implement the rest (writable APIs) of RM web-services
> -----------------------------------------------------
>                 Key: YARN-1695
>                 URL: https://issues.apache.org/jira/browse/YARN-1695
>             Project: Hadoop YARN
>          Issue Type: New Feature
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Varun Vasudev
> MAPREDUCE-2863 added the REST web-services to RM and NM. But all the APIs 
> added there were only focused on obtaining information from the cluster. We 
> need to have the following REST APIs to finish the feature
>  - Application submission/termination (Priority): This unblocks easy client 
> interaction with a YARN cluster
>  - Application Client protocol: For resource scheduling by apps written in an 
> arbitrary language. Will have to think about throughput concerns
>  - ContainerManagement Protocol: Again for arbitrary language apps.
> One important thing to note here is that we already have client libraries on 
> all the three protocols that do some some heavy-lifting. One part of the 
> effort is to figure out if they can be made any thinner and/or how 
> web-services will implement the same functionality.

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