alamb commented on issue #8643:
URL: https://github.com/apache/arrow-rs/issues/8643#issuecomment-3464057986

   Finally, another interesting question is if the ArrowReader should try and 
minimize the metadata decoding on its own.
   
   For example, if the reader is asked to read only 3 columns, and no other 
instruction is given for metadata, should it only decode the metadata for those 
three columns?
   
   I think the answer is yes....


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