CookiePieWw commented on issue #7593:
URL: https://github.com/apache/arrow-rs/issues/7593#issuecomment-2934046950

   As explained in 
https://github.com/apache/arrow-rs/pull/7574#discussion_r2122362828, the schema 
is inferred by the first row group and the row becomes not nullable, so that 
the `None` in the second row group is translated as an empty string. Maybe we 
need to give an error here.


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