assignUser commented on issue #14726:
URL: https://github.com/apache/arrow/issues/14726#issuecomment-1326473631

   Parquet files are written with compression turned on by default, which means 
that usually the size on disk is much (depending on the data several times!) 
smaller than the actual in-memory size of the data. 
   
   Can you confirm if the file is written with compression? 
   
   cc @jorisvandenbossche 


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