felipecrv commented on issue #36708:
URL: https://github.com/apache/arrow/issues/36708#issuecomment-1639310748

   @coady the issue is triggered by giving an input array without nulls that 
has a non-null validity bitmap buffer. The PR I've sent fixes that.
   
   @mapleFU it might be nice to investigate if the reading of Parquet files is 
unnecessarily producing validity buffers when `null_count` is zero. Setting 
those buffers to `NULLPTR` when `null_count` is known to be zero can avoid this 
kind of confusion and save some cost of calculating `null_count` by scanning 
all the bits down the road.


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