Dmitry Lysnichenko created AMBARI-22986:

             Summary: Not able to add Livy2 after doing rolling upgrade to M21
                 Key: AMBARI-22986
             Project: Ambari
          Issue Type: Bug
            Reporter: Dmitry Lysnichenko
            Assignee: Dmitry Lysnichenko

Steps to reproduce :
1) Create a cluster with ambari-2.4.3+HDP-2.5.3
2) Do ambari upgrade to ambari-2.6.1
3) Do stack upgrade to HDP-2.6.4
After upgrade its not possible to add livy2(Livy2 is a spark2 component).

This issue is specific to rolling upgrade. I am able to add livy2 in express 
upgraded cluster
Also in EU cluster I see 'Upgrade service configs' step , this step is likely 
updating the spark2 livy2 configs. But I am not seeing this in RU cluster.

The reason is that the desired version of a cluster is not updated (only during 
cross-stack rolling upgrade)

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