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https://issues.apache.org/jira/browse/YARN-6405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15963366#comment-15963366
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Billie Rinaldi commented on YARN-6405:
--------------------------------------

bq. Since the service-UI also differentiates service vs app, ATS also stores 
the type as service, I feel it is better to call it service ? I also think we 
may rename the Application.java object to Service? your opinion ?

Sure, I agree service would be better.

bq. does this mean a failed ZK instance needs to be strictly re-allocated on 
the same node, or to be re-allocated on one of the nodes where zk instances 
ever ran ?

The former. A named ZK instance (e.g. ZK2) should only be re-allocated on the 
same node.

> Improve configuring services through REST API
> ---------------------------------------------
>
>                 Key: YARN-6405
>                 URL: https://issues.apache.org/jira/browse/YARN-6405
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Jian He
>            Assignee: Jian He
>         Attachments: YARN-6405.yarn-native-services.01.patch, 
> YARN-6405.yarn-native-services.02.patch, 
> YARN-6405.yarn-native-services.03.patch, 
> YARN-6405.yarn-native-services.04.patch
>
>
> YARN-4793 defined various ways that user can config services through the 
> configuration section of the REST API.  But, some semantics are not yet 
> supported in the back-end server (AM).  YARN-6255 has done some work, this 
> jira is to complete this task -  support configuring services through REST API



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