[jira] [Resolved] (AMBARI-23852) Provide a Framework For Adding A Component During Upgrade

["Jonathan Hurley (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-23852?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Hurley resolved AMBARI-23852.
--------------------------------------
    Resolution: Fixed

> Provide a Framework For Adding A Component During Upgrade
> ---------------------------------------------------------
>
>                 Key: AMBARI-23852
>                 URL: https://issues.apache.org/jira/browse/AMBARI-23852
>             Project: Ambari
>          Issue Type: Task
>          Components: ambari-server
>    Affects Versions: 2.7.0
>            Reporter: Jonathan Hurley
>            Assignee: Jonathan Hurley
>            Priority: Critical
>              Labels: pull-request-available
>             Fix For: 2.7.0
>
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> During an upgrade it might be necessary to add a component automatically. For example, if a component is being replaced between stacks, then Ambari needs to remove the original component and add the new one.
> This is a new situation which we've never had before. AMBARI-23553 was created to automatically remove services/components during an upgrade which didn't appear in the new stack. However, to replace a service component is something that involves more thought.
> Perhaps we need an action that's similar to this:
> {code}
> <group xsi:type="cluster" name="ADD_YARN_TIMELINE_READER" title="Replace ATS with Timeline Reader">
>   <execute-stage title="Replace ATS with Timeline Reader">
>     <task xsi:type="add_component" service="YARN" component="TIMELINE_READER" host-service="YARN" host-component="APP_TIMELINE_SERVER">
>       <summary>Add Timeline Reader to the cluster</summary>
>     </task>
>   </execute-stage>
> </group>
> {code}



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