cgivre commented on PR #2937:
URL: https://github.com/apache/drill/pull/2937#issuecomment-2322480191

   > All of this is premised on the notion that someone did, recently, add a 
"Parquet prescan" to the planner, and that someone added column type 
propagation to the Calcite planner. Was this actually done? Or, are we somehow 
assuming it was done? Are we confusing this with the old Parquet schema cache? 
Again, I've been out of the loop so I'm just verifying I'm understanding the 
situation.
   
   @paul-rogers I'm not aware of any recent significant work on the Parquet 
reader.  I know @jnturton did some work regarding adding new compression 
capabilities and there have been a few bug fixes here and there, but nothing 
major as I recall. 


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