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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/10/15 17:27:45 UTC

[GitHub] [arrow] pitrou edited a comment on pull request #8470: ARROW-10313: [C++] Faster UTF8 validation for small strings

pitrou edited a comment on pull request #8470:
URL: https://github.com/apache/arrow/pull/8470#issuecomment-709453602


   Another possibility would be to compute and store ASCIIness of values while parsing CSV (ideally this should not cost anything CPU-wise). Then we can reuse that information to skip UTF8 validation for most values.
   
   Edit: actually, a quick attempt shows a significant decrease in CSV parsing speed. Too bad.


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