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https://issues.apache.org/jira/browse/DRILL-7458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16990188#comment-16990188
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ASF GitHub Bot commented on DRILL-7458:
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paul-rogers commented on issue #1914: DRILL-7458: Base framework for storage
plugins
URL: https://github.com/apache/drill/pull/1914#issuecomment-562748278
@arina-ielchiieva, updated some of the comments to make things a bit
clearer. Also, did an extensive tutorial
[here](https://github.com/paul-rogers/drill/wiki/Create-a-Storage-Plugin).
As it turns out, the "base" stuff is pretty basic; it is just a thin layer
on what is there. (Still struggling with how to abstract out some of the
remaining complexity.) The key new bit is the filter push-down strategy. The
best way to understand that is to look at the unit test cases.
Thanks much for taking another look.
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> Base storage plugin framework
> -----------------------------
>
> Key: DRILL-7458
> URL: https://issues.apache.org/jira/browse/DRILL-7458
> Project: Apache Drill
> Issue Type: Improvement
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Priority: Major
> Labels: doc-impacting
> Fix For: 1.18.0
>
>
> The "Easy" framework allows third-parties to add format plugins to Drill with
> moderate effort. (The process could be easier, but "Easy" makes it as simple
> as possible given the current structure.)
> At present, no such "starter" framework exists for storage plugins. Further,
> multiple storage plugins have implemented filter push down, seemingly by
> copying large blocks of code.
> This ticket offers a "base" framework for storage plugins and for filter
> push-downs. The framework builds on the EVF, allowing plugins to also support
> project push down.
> The framework has a "test mule" storage plugin to verify functionality, and
> was used as the basis of an REST-like plugin.
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