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https://issues.apache.org/jira/browse/SPARK-27708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16839846#comment-16839846
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Jacek Laskowski commented on SPARK-27708:
-----------------------------------------

What's really needed? I've been reviewing the code of the new v2 data sources, 
but don't understand "How to plug in catalog implementations" and the others. 
I'd like to help with the docs and would like to start with "How to plug in 
catalog implementations". Please guide.

> Add documentation for v2 data sources
> -------------------------------------
>
>                 Key: SPARK-27708
>                 URL: https://issues.apache.org/jira/browse/SPARK-27708
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.3
>            Reporter: Ryan Blue
>            Priority: Major
>              Labels: documentation
>
> Before the 3.0 release, the new v2 data sources should be documented. This 
> includes:
>  * How to plug in catalog implementations
>  * Catalog plugin configuration
>  * Multi-part identifier behavior
>  * Partition transforms
>  * Table properties that are used to pass table info (e.g. "provider")



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