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https://issues.apache.org/jira/browse/AMBARI-3156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13763078#comment-13763078
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Oleg Nechiporenko commented on AMBARI-3156:
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+1 for patch!
> NameNode HA wizard (rollback): Create API calls for Restore HDFSconfigs,
> Enable Secondary NN, Stop JournalNodes
> ---------------------------------------------------------------------------------------------------------------
>
> Key: AMBARI-3156
> URL: https://issues.apache.org/jira/browse/AMBARI-3156
> Project: Ambari
> Issue Type: Task
> Components: client
> Affects Versions: 1.4.1
> Reporter: Antonenko Alexander
> Assignee: Antonenko Alexander
> Fix For: 1.4.1
>
> Attachments: AMBARI-3156.patch
>
>
> For following tasks:
> Restore HDFS configs
> Enable Secondary NameNode
> Stop JournalNodes
> Note that:
> Show progress for this tasks
> Check at what state is currently the component, delete component only if it
> is in maintenance mode.
> Implement function:
> For input will take component name, and array of hosts.
> Set this component on different hosts to maintenance mode.
> Delete this component on different hosts.
> Show progress popup when user click on task name.
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