tustvold commented on issue #3520:
URL: https://github.com/apache/arrow-rs/issues/3520#issuecomment-1398277914

   > Would that be a problem?
   
   Yes, wherever possible we should handle the indices and values separately, 
similarly to how we currently handle dictionaries. Otherwise you 
catastrophically explode code gen and build times, see 
https://github.com/apache/arrow-rs/issues/2596 and 
https://github.com/apache/arrow-datafusion/pull/4999 for some more context. 
Non-scalar binary kernels are the only ones where I foresee this not being 
possible, we should gate those behind feature flags.
   
   TypedDictionaryArray is useful for statically typed codepaths, but using it 
in kernels that must be generated for every combination of types ends up being 
problematic


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