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https://issues.apache.org/jira/browse/AMBARI-3644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13810787#comment-13810787
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Srimanth Gunturi commented on AMBARI-3644:
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+1 for patch.
> App.ServiceConfig needs 'defaultsProvider' mechanism
> ----------------------------------------------------
>
> Key: AMBARI-3644
> URL: https://issues.apache.org/jira/browse/AMBARI-3644
> Project: Ambari
> Issue Type: Bug
> Components: client
> Affects Versions: 1.4.2
> Reporter: Oleg Nechiporenko
> Assignee: Oleg Nechiporenko
> Fix For: 1.4.2
>
> Attachments: AMBARI-3644.patch
>
>
> {{App.ServiceConfig}} needs to have a 'defaultsProvider' property, which will
> give an object extending {{App.DefaultsProvider}} class.
> {{App.DefaultsProvider}} class will have a method
> 'getDefaults(App.ServiceConfigProperty[])'. This 'defaultsProvider' will be
> set via {{data/service_configs.js}} only for YARN service.
> {{App.YARNDefaultsProvider}} will look at cluster setup, the provided
> properties, and provide an object where keys are property-names, and values
> are the recommended defaults.
> These defaults will then be used during cluster install as default values.
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