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From "Srimanth Gunturi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-3644) App.ServiceConfig needs 'defaultsProvider' mechanism
Date Thu, 31 Oct 2013 22:01:18 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-3644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13810787#comment-13810787
] 

Srimanth Gunturi commented on AMBARI-3644:
------------------------------------------

+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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