[jira] [Work logged] (KNOX-2298) ClouderaManager cluster config monitor should stop monitoring unreferenced clusters

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KNOX-2298?focusedWorklogId=404926&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-404926 ]

ASF GitHub Bot logged work on KNOX-2298:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 17/Mar/20 19:50
            Start Date: 17/Mar/20 19:50
    Worklog Time Spent: 10m 
      Work Description: pzampino commented on pull request #291: KNOX-2298 - ClouderaManager cluster config monitor should stop monito…
URL: https://github.com/apache/knox/pull/291
 
 
   …ring unreferenced clusters
   
   ## What changes were proposed in this pull request?
   
   Improved the CM cluster configuration monitoring to stop monitoring clusters that are no longer referenced by any descriptors (e.g., descriptor deleted or modified).
   
   ## How was this patch tested?
   
   Added a test to PollingConfigurationAnalyzerTest, performed manual testing, and executed all existing tests.
 
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Issue Time Tracking
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            Worklog Id:     (was: 404926)
    Remaining Estimate: 0h
            Time Spent: 10m

> ClouderaManager cluster config monitor should stop monitoring unreferenced clusters
> -----------------------------------------------------------------------------------
>
>                 Key: KNOX-2298
>                 URL: https://issues.apache.org/jira/browse/KNOX-2298
>             Project: Apache Knox
>          Issue Type: Improvement
>          Components: cm-discovery
>    Affects Versions: 1.4.0
>            Reporter: Philip Zampino
>            Assignee: Philip Zampino
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> When a descriptor is deployed with discovery configuration, the cluster configuration monitor will begin monitoring the referenced cluster. If that descriptor is subsequently undeployed, and there are no remaining descriptors referencing that same cluster, then the monitor should stop monitoring that cluster configuration.
> Currently, it will continue monitoring such clusters for config changes, and only stop monitoring a cluster if a config change is noticed, at which time it realizes there are no relevant descriptors.



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