tustvold commented on issue #7040:
URL: https://github.com/apache/arrow-rs/issues/7040#issuecomment-2625297574

   > I would interpret this to mean that only 8 bits are significant and that 
the bit pattern represents an unsigned value.
   
   I don't disagree that this is an interpretation of the specification, but it 
also by no means the only one. I think the correct behaviour would need to be 
clarified before making any changes here.
   
   > Irrespective of what the parquet cli displays for the value, it certainly 
does not display a null, implying the value is valid and within the range of 
legal values.
   
   Given it spits out an objectively invalid value, I think a perhaps more 
reasonable take is that the data is invalid and the behaviour undefined.


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