lidavidm commented on PR #41823:
URL: https://github.com/apache/arrow/pull/41823#issuecomment-2136275980

   > Is there any desire to include any other information that the producer has 
available? If some future Parquet standard allows for extension types it might 
make sense for the Parquet reader to pass on the extension metadata somehow (or 
maybe that should only be considered when the feature is first requested, which 
might be never?)
   
   In that case, wouldn't it just get mapped as a different extension type? I 
suppose I can see this being used as a generic "Parquet gave an extension type 
that I don't know how to deal with". I think we can add a new field at that 
point.


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