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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/05/10 09:25:14 UTC

[GitHub] [arrow] JiaRu2016 commented on issue #10138: feather read a part of columns slower than read the entire file

JiaRu2016 commented on issue #10138:
URL: https://github.com/apache/arrow/issues/10138#issuecomment-836457854


   the result I post was run on a Linux server whose disk is HDD. I also run on my Mac whose disk is SSD, then the result is same as @westonpace 's result.
   
   so I agree with his guess:
   
   > 
   > My guess is that it is not linear because you take an HDD penalty moving from sequential scan to random access.
   
   


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