Anton Okolnychyi commented on SPARK-30107:

I'll submit a PR

> Expose nested schema pruning to all V2 sources
> ----------------------------------------------
>                 Key: SPARK-30107
>                 URL: https://issues.apache.org/jira/browse/SPARK-30107
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Anton Okolnychyi
>            Priority: Major
> I think it would be great to expose the existing logic for nested schema 
> pruning to all V2 sources, which is in line with the description of 
> {{SupportsPushDownRequiredColumns}} . That way, all sources that are capable 
> of pruning nested columns will benefit from this.

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