[jira] [Created] (AMBARI-14566) Blueprint config processor should not expect only one instance of ATS/AMS/JHS

["Sandor Magyari (JIRA)" <ji...@apache.org>]

Sandor Magyari created AMBARI-14566:
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             Summary: Blueprint config processor should not expect only one instance of ATS/AMS/JHS
                 Key: AMBARI-14566
                 URL: https://issues.apache.org/jira/browse/AMBARI-14566
             Project: Ambari
          Issue Type: Bug
          Components: ambari-server
    Affects Versions: 2.2.1
            Reporter: Sandor Magyari
            Assignee: Sandor Magyari
            Priority: Blocker
             Fix For: 2.2.1


Some deployments can deploy two instances of ATS/AMS/JHS. However, there is code in Blueprint config processing which assumes only one host for these component type and thus tries to compute URLS using the SingleHostTopologyUpdater resulting in the following error:

java.lang.IllegalArgumentException: Unable to update configuration property 'yarn.timeline-service.webapp.https.address' with topology information. Component 'APP_TIMELINE_SERVER' is mapped to an invalid number of hosts '2'.

SingleHostTopologyUpdater   should not update the original value of  properties if they already have a value, in case of having multiple instances of HISTORYSERVER and APP_TIMELINE_SERVER components.






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