mapleFU commented on issue #35688:
URL: https://github.com/apache/arrow/issues/35688#issuecomment-1556431321

   I guess you can just comparing them under a linux machine, or wsl. Seems 
that using mmap needs extra development in this library. You can try on wsl2 or 
linux machines, develop mmap yourself if you want.
   
   By the way, I think JoinTable should use spill instead of mmap.


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