Dmytro Grinenko updated AMBARI-18609:
    Attachment: AMBARI-18609.patch

> Implement a way to configure Stack Upgrade Merger to skip particular 
> properties to be merged from stack defaults
> ----------------------------------------------------------------------------------------------------------------
>                 Key: AMBARI-18609
>                 URL: https://issues.apache.org/jira/browse/AMBARI-18609
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: trunk
>            Reporter: Dmytro Grinenko
>            Priority: Critical
>             Fix For: trunk
>         Attachments: AMBARI-18609.patch
> We need to reincarnate on-stack-upgrade feature in less functionality way. 
> It's true, that we don't need an analog to Stack Advisor or Upgrade Packs, 
> however we need a way to exclude some property from being merged with stack 
> defaults during Upgrade.
> Why we need this: there could be a lot of situations, when we need some 
> properties only in some 
> picante moments, and these properties regulated according to Stack 
> Advisor/Wizards or another internal state. In this case, these properties 
> shipped with dummy stack default values, which are incorrect.

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