Oleg Nechiporenko created AMBARI-3644:
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Summary: 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
{{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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