guiyanakuang opened a new pull request, #1692:
URL: https://github.com/apache/orc/pull/1692

   ### What changes were proposed in this pull request?
   This PR aims to fix an issue where the column statistics were incorrectly 
evaluated in scenarios where no values were written, resulting in the inability 
to skip row groups.
   
   
   ### Why are the changes needed?
   The fix improves the evaluation logic of statistics, enabling the skipping 
of row groups that don't need to be read, thus enhancing performance.
   
   
   ### How was this patch tested?
   Unit tests have been added to validate the changes.
   
   
   
   
   
   


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