[GitHub] [spark] gengliangwang opened a new pull request #24518: [SPARK-27627][SQL] Make option "pathGlobFilter" as a general option for all file sources

[GitBox <gi...@apache.org>]

gengliangwang opened a new pull request #24518: [SPARK-27627][SQL] Make option "pathGlobFilter" as a general option for all file sources
URL: https://github.com/apache/spark/pull/24518
 
 
   ## What changes were proposed in this pull request?
   
   ### Background:
   The data source option `pathGlobFilter` is introduced for Binary file format: https://github.com/apache/spark/pull/24354 , which can be used for filtering file names, e.g. reading `.png` files only while there is `.json` files in the same directory.
   
   ### Proposal:
   Make the option `pathGlobFilter` as a general option for all file sources. The path filtering should happen in the path globbing on Driver.
   
   ### Motivation:
   Filtering the file path names in file scan tasks on executors is kind of ugly.
   
   ### Impact:
   1. The splitting of file partitions will be more balanced.
   2. The metrics of file scan will be more accurate.
   3. Users can use the option for reading other file sources.
   
   ## How was this patch tested?
   
   Unit tests
   

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