[jira] [Commented] (DRILL-7590) Refactor plugin registry

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

    [ https://issues.apache.org/jira/browse/DRILL-7590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17048697#comment-17048697 ] 

ASF GitHub Bot commented on DRILL-7590:
---------------------------------------

paul-rogers commented on issue #1988: DRILL-7590: Refactor plugin registry
URL: https://github.com/apache/drill/pull/1988#issuecomment-593154733
 
 
   @arina-ielchiieva, thanks for catching the type. Now fixed. Squashed commits. Thanks for doing the full pre-commit test run: those tests use Drill closer to "real production" than unit tests and will tell us if anything else still needs fixing. 
 
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> Refactor plugin registry
> ------------------------
>
>                 Key: DRILL-7590
>                 URL: https://issues.apache.org/jira/browse/DRILL-7590
>             Project: Apache Drill
>          Issue Type: Improvement
>    Affects Versions: 1.17.0
>            Reporter: Paul Rogers
>            Assignee: Paul Rogers
>            Priority: Major
>              Labels: ready-to-commit
>             Fix For: 1.18.0
>
>
> The plugin registry connects configurations, stored in ZK, with implementations, which are Java classes. The registry handles a large number of tasks including:
> * Populating "bootstrap" plugin configurations and handling upgrades.
> * Reading from, and writing to, the persistent store in ZK.
> * Handling "normal" (configured) plugins and special system plugins (which have no configuration.)
> * Handle format plugins which are always associated with the DFS storage plugin.
> * And so on.
> The code has grown overly complex. As we look to add a new, cleaner plugin mechanism, we will start by cleaning up what we have to allow the new mechanism to be one of many.



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