[jira] [Created] (AMBARI-22590) Messages for some services during PU package installation indicate circular dependency

["Jonathan Hurley (JIRA)" <ji...@apache.org>]

Jonathan Hurley created AMBARI-22590:
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             Summary: Messages for some services during PU package installation indicate circular dependency
                 Key: AMBARI-22590
                 URL: https://issues.apache.org/jira/browse/AMBARI-22590
             Project: Ambari
          Issue Type: Bug
    Affects Versions: 2.6.1
            Reporter: Jonathan Hurley
            Assignee: Jonathan Hurley
            Priority: Blocker
             Fix For: 2.6.1


Written this as 'Blocker' severity, please triage once and decide 

This issue could affect user experience for Patch Upgrades

*Case 1:* Register Patch VDF for Mapreduce service
Try to install the packages
Result: Error for missing Hive service in the VDF (see MR-only.png)

*Case 2:* Add Hive to the patch VDF, os that it now includes both MR and Hive
Try to install the packages
Result: Error for missing Tez service in the VDF (see MR-and-Hive)

This is now confusing as the dependency looks cyclic, we asked to add Hive in first case and now asking to add MR again

*Case 3:* Add a new VDF for only Mahout or Oozie. This would prompt for MR due to dependency. Now you need to add MR and Hive and then Tez too (see Mahout-only.png)

*Expected result:* The message for dependent services should recursively decide the services and print them all at once. 



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