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https://issues.apache.org/jira/browse/AMBARI-23852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16482667#comment-16482667
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Hudson commented on AMBARI-23852:
---------------------------------
SUCCESS: Integrated in Jenkins build Ambari-trunk-Commit #9305 (See
[https://builds.apache.org/job/Ambari-trunk-Commit/9305/])
AMBARI-23852. Provide a Framework For Adding A Component During Upgrade.
(github:
[https://gitbox.apache.org/repos/asf?p=ambari.git&a=commit&h=d5ccac02415794c7bb58ce09bc3871789147f488])
* (edit)
ambari-server/src/main/java/org/apache/ambari/server/stack/MasterHostResolver.java
> 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: 1.5h
> 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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