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Posted to github@arrow.apache.org by "Fokko (via GitHub)" <gi...@apache.org> on 2023/02/23 12:17:41 UTC

[GitHub] [arrow] Fokko commented on issue #34162: [Python] `is_null(nan_is_null=True)` does not work with only NaN's

Fokko commented on issue #34162:
URL: https://github.com/apache/arrow/issues/34162#issuecomment-1441663151

   @jorisvandenbossche Thanks for diving into this. Sorry for the late reply, I had to shift priorities a bit, but now I'm back.
   
   Looking at the notebook:
   ![image](https://user-images.githubusercontent.com/1134248/220902591-fca2779b-f623-41e6-8e3c-4181db638b1c.png)
   
   When running `.filter()` it works well, but when passing the filter to the `read_table` messes things up. Maybe because it skips the page when doing predicate pushdown?
   
   The parquet files: [parquet-files.zip](https://github.com/apache/arrow/files/10813386/parquet-files.zip)


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