[jira] [Updated] (YARN-913) Add a way to register long-lived services in a YARN cluster

["Robert Joseph Evans (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Joseph Evans updated YARN-913:
-------------------------------------

    Attachment: RegistrationServiceDetails.txt

Uploading a file that shows some examples of the registration service APIs.  Any feedback on them is appreciated.

> Add a way to register long-lived services in a YARN cluster
> -----------------------------------------------------------
>
>                 Key: YARN-913
>                 URL: https://issues.apache.org/jira/browse/YARN-913
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: api
>    Affects Versions: 3.0.0
>            Reporter: Steve Loughran
>            Assignee: Robert Joseph Evans
>         Attachments: RegistrationServiceDetails.txt
>
>
> In a YARN cluster you can't predict where services will come up -or on what ports. The services need to work those things out as they come up and then publish them somewhere.
> Applications need to be able to find the service instance they are to bond to -and not any others in the cluster.
> Some kind of service registry -in the RM, in ZK, could do this. If the RM held the write access to the ZK nodes, it would be more secure than having apps register with ZK themselves.



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