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https://issues.apache.org/jira/browse/AMBARI-18943?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sumit Mohanty updated AMBARI-18943:
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Status: Patch Available (was: Open)
> 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
>
> Attachments: AMBARI-18943.patch
>
>
> 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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