[ 
https://issues.apache.org/jira/browse/AMBARI-22779?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Doroszlai, Attila updated AMBARI-22779:
---------------------------------------
    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

Committed to 
[branch-2.6|https://github.com/apache/ambari/commit/1fcb0e8a804e5f3c78a9e3ed7c06f79e2ea26a1c]
 and 
[trunk|https://github.com/apache/ambari/commit/7be21c9148fa0a1cb088d13407974b60dac68b3].

> Cannot scale cluster if Ambari Server restarted since blueprint cluster 
> creation
> --------------------------------------------------------------------------------
>
>                 Key: AMBARI-22779
>                 URL: https://issues.apache.org/jira/browse/AMBARI-22779
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 2.6.0
>            Reporter: Doroszlai, Attila
>            Assignee: Doroszlai, Attila
>            Priority: Blocker
>              Labels: blueprint, pull-request-available
>             Fix For: 3.0.0, 2.6.2
>
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> STR:
> # Create cluster using blueprint
> # Restart Ambari Server
> # Install Ambari Agent on new host and register with server
> # Add the new host via API request
> # Start Ambari Agent on the new host
> Result: Ambari Server accepts the scale request, but does not proceed to 
> install/start components on the new host
> The problem is that AMBARI-22012 fixed a timing/ordering issue by introducing 
> an executor, which is started on "cluster configured" event during blueprint 
> cluster creation. If Ambari Server is restarted afterwards, the executor will 
> stay stopped, hence tasks for scale requests are never executed.



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