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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/11/30 11:41:15 UTC

[GitHub] [arrow] pitrou commented on issue #14726: pq.read_table("parquet files path", memory_map=True) still consume large memory space(200G file cost 200G memory and slow)

pitrou commented on issue #14726:
URL: https://github.com/apache/arrow/issues/14726#issuecomment-1332020913

   > does the memory map does not work?
   
   Why do you think it is not working? As long as the memory is not needed by anything else, your operating system simply chooses to keep the file in cache AFAIU.


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