alamb commented on issue #11162:
URL: https://github.com/apache/datafusion/issues/11162#issuecomment-2212542658

   
   
   > I suppose there's a third option of updating arrow-rs to correctly 
calculate if a `UnionArray` is null, but I presume that works take much longer
   
   It would likely take longer
   
   Note there is a method that takes into account child nullability that 
perhaps we could use instead of `is_null`: 
   
https://docs.rs/arrow/latest/arrow/array/trait.Array.html#method.logical_nulls
   
   


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