guykhazma opened a new pull request #27157: [SPARK-30428][SQL][FOLLOWUP] File 
source V2: Push data filters for file listing
URL: https://github.com/apache/spark/pull/27157
 
 
   ### What changes were proposed in this pull request?
   Follow up on [SPARK-30428](https://github.com/apache/spark/pull/27112) which 
added support for partition pruning in File source V2. 
   This PR implements the necessary changes in order to pass the `dataFilters` 
to the `listFiles`. This enables having `FileIndex` implementations which use 
the `dataFilters` for further pruning the file listing (see the discussion 
[here](https://github.com/apache/spark/pull/27112#discussion_r364757217)).
   
   ### Why are the changes needed?
   Datasources such as `csv` and `json` do not implement the 
`SupportsPushDownFilters` trait. In order to support data skipping uniformly 
for all file based data sources, one can override the `listFiles` method in a 
`FileIndex` implementation, which consults external metadata and prunes the 
list of files.
   
   ### Does this PR introduce any user-facing change?
   No
   
   ### How was this patch tested?
   Modifying the unit tests for v2 file sources to verify the `dataFilters` are 
passed
   

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