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https://issues.apache.org/jira/browse/METRON-777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16063709#comment-16063709
 ] 

ASF GitHub Bot commented on METRON-777:
---------------------------------------

Github user mmiklavc commented on a diff in the pull request:

    https://github.com/apache/metron/pull/530#discussion_r124111822
  
    --- Diff: metron-analytics/metron-maas-service/README.md ---
    @@ -138,7 +138,7 @@ Now that we have a deployed model, let's adjust the 
configurations for the Squid
     * Edit the squid parser configuration at 
`$METRON_HOME/config/zookeeper/parsers/squid.json` in your favorite text editor 
and add a new FieldTransformation to indicate a threat alert based on the model 
(note the addition of `is_malicious` and `is_alert`):
     ```
     {
    -  "parserClassName": "org.apache.metron.parsers.GrokParser",
    +  "parserClassName": "org.apache.metron.parsers.grok.GrokParser",
    --- End diff --
    
    Ok, thanks for the clarification


> Create a plugin system for Metron based on 'NAR'
> ------------------------------------------------
>
>                 Key: METRON-777
>                 URL: https://issues.apache.org/jira/browse/METRON-777
>             Project: Metron
>          Issue Type: New Feature
>            Reporter: Otto Fowler
>            Assignee: Otto Fowler
>
> The success of the Metron project will be greatly dependent on community 
> participation, and with that the ability to adapt and extend Metron without 
> having to maintain a fork of the project.
> As organizations and individuals look to extend the Metron system with custom 
> parsers, enrichments, and stellar functions that may be proprietary in 
> nature, the ability to develop and deploy these extensions outside the Metron 
> code base is critically important.
> To that end, and after community discussion and proposal we create or 
> formalize the 'plugin' development story in Metron.  
> The proposal is to adapt the Apache Nifi NAR system for use in Metron.  This 
> will provide the system with:
> * archetype(s) for developer projects and independent development
> * defined packaging and metadata for 'plugin' products
> * loading and instantiation with classloader isolation capabilities
> * removing the necessity for shading plugin jars
> These capabilities will also enable other features, such as plugin lifecycle, 
> plugin configuration+redeployment, and other things.
> The plugin archetypes and their installation will be a followon



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