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https://issues.apache.org/jira/browse/DRILL-7293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16862618#comment-16862618
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ASF GitHub Bot commented on DRILL-7293:
---------------------------------------

paul-rogers commented on pull request #1807: DRILL-7293: Convert the regex 
("log") plugin to use EVF
URL: https://github.com/apache/drill/pull/1807
 
 
   Converts the log format plugin (which uses a regex for parsing) to work
   with the Extended Vector Format.
   
   This commit provides the basic conversion:
   
   * Use the plugin config object to pass config to the Easy framework.
   * Use the EVF scan mechanism in place of the legacy "ScanBatch"
   mechanism.
   * Minor code and README cleanup.
   
   This commit corresponds to the Basic Tutorial steps in the EVF tutorial.
 
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> Convert the regex ("log") plugin to use EVF
> -------------------------------------------
>
>                 Key: DRILL-7293
>                 URL: https://issues.apache.org/jira/browse/DRILL-7293
>             Project: Apache Drill
>          Issue Type: Improvement
>    Affects Versions: 1.16.0
>            Reporter: Paul Rogers
>            Assignee: Paul Rogers
>            Priority: Major
>             Fix For: 1.17.0
>
>
> The "log" plugin (which uses a regex to define the row format) is the subject 
> of Chapter 12 of the Learning Apache Drill book (though the version in the 
> book is simpler than the one in the master branch.)
> The recently-completed "Enhanced Vector Framework" (EVF, AKA the "row set 
> framework") gives Drill control over the size of batches created by readers, 
> and allows readers to use the recently-added provided schema mechanism.
> We wish to use the log reader as an example for how to convert a Drill format 
> plugin to use the EVF so that other developers can convert their own plugins.
> This PR provides the first set of log plugin changes to enable us to publish 
> a tutorial on the EVF.



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