[GitHub] [arrow] jorisvandenbossche commented on issue #35209: Add a type alias for `pa.dictionary(pa.int32(), pa.string())`

["jorisvandenbossche (via GitHub)" <gi...@apache.org>]

jorisvandenbossche commented on issue #35209:
URL: https://github.com/apache/arrow/issues/35209#issuecomment-1516146714

   > (*) I noticed horrible performance when trying to load CSV data using `column_types={"col": pa.dictionary(pa.int64(), pa.string())}` or `column_types={"col": pa.dictionary(pa.int16(), **pa.string())}` or `column_types={"col": pa.dictionary(pa.uint32(), pa.string())}`. Only `int32` seems to behave as expected, performance-wise. If this is a bug I can open another issue.
   
   This seems something to fix. Yes, if you could open a separate issue for this, that would be great.
   
    


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