tustvold commented on issue #2444:
URL: https://github.com/apache/arrow-rs/issues/2444#issuecomment-1216909510

   >  I think it's a slight difference in behavior from the C++ parser
   
   What is the behavior of the C++ parser?
   
   > Would you consider making the community less divergent?
   
   Happy to be corrected on this, but I don't believe there is a standard for 
extension types, one could conceivably make the case that such a concept would 
be an oxymoron... If there is a general purpose data type that is missing from 
the standard set, I'm sure the community would be willing to consider additions 
to the arrow specification, and this would be the path to portability for that 
data type.
   
   There is always going to be a trade-off between expressiveness and 
portability, with extension types sacrificing the latter in favour of the 
former. I'm not sure there is a way around this... _FWIW just supporting the 
standard arrow types is ripe with excitement #1666_ 


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