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https://issues.apache.org/jira/browse/AMBARI-13573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14976958#comment-14976958
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Xi Wang commented on AMBARI-13573:
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Tested e2e. All UT passed.
> Express Upgrade: UI - Disallow Downgrade when performing upgrade from HDP 2.1
> -> 2.3
> ------------------------------------------------------------------------------------
>
> Key: AMBARI-13573
> URL: https://issues.apache.org/jira/browse/AMBARI-13573
> Project: Ambari
> Issue Type: Task
> Components: ambari-web
> Affects Versions: 2.1.3
> Reporter: Xi Wang
> Assignee: Xi Wang
> Fix For: 2.1.3
>
>
> The UI for stack upgrade always allows performing a Downgrade in the case of
> an error, or during several checkpoints.
> In the case of an Express Upgrade, we will not allow a Downgrade because of
> the complexity involved.
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