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https://issues.apache.org/jira/browse/AMBARI-13600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14978306#comment-14978306
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Aleksandr Kovalenko commented on AMBARI-13600:
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+1 for the patch
> Allow The Removal Of Hosts in Maintenance Mode Via The Web Client During An
> Upgrade
> -----------------------------------------------------------------------------------
>
> Key: AMBARI-13600
> URL: https://issues.apache.org/jira/browse/AMBARI-13600
> Project: Ambari
> Issue Type: Task
> Components: ambari-web
> Affects Versions: 2.1.0
> Reporter: Andrii Tkach
> Assignee: Andrii Tkach
> Priority: Critical
> Fix For: 2.1.3
>
> Attachments: AMBARI-13600.patch
>
>
> During an upgrade, web client allow for a host to be placed into Maintenance
> Mode in order for it to be excluded from the upgrade. Although there is work
> planned to be able to finalize an upgrade with hosts that are in MM and
> out-of-sync, in the short term there also needs to be the ability to remove
> these hosts so that finalization can complete.
> The web client should expose the ability to remove hosts in MM during an
> upgrade. This should only apply to hosts in MM. It can be made a part of the
> RU wizard at the time of finalization or exposed in other areas of the UI.
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