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From "Sumit Mohanty (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-18943) If multiple HSI components are deployed then HSI start should not restart llap
Date Sat, 19 Nov 2016 23:51:58 GMT
Sumit Mohanty created AMBARI-18943:
--------------------------------------

             Summary: If multiple HSI components are deployed then HSI start should not restart
llap
                 Key: AMBARI-18943
                 URL: https://issues.apache.org/jira/browse/AMBARI-18943
             Project: Ambari
          Issue Type: Bug
          Components: stacks
    Affects Versions: 2.5.0
            Reporter: Sumit Mohanty
            Assignee: Sumit Mohanty
            Priority: Critical
             Fix For: 2.5.0


When HSI component is started, it destroys the llap app and then starts it. However, if multiple
HSI instances are deployed then when an instance is started (due to fail over of another instance)
then it should be checked if llap is running and if it is then it should not be restarted.

Multiple HSI instances are deployed only in an active-passive scenario to enable fail over.
As llap app is an YARN app, it automatically supports failover. So not forcing a restart of
llap is a requirement when HSI is deployed in an active-passive mode.



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