tustvold commented on issue #1750:
URL: https://github.com/apache/arrow-rs/issues/1750#issuecomment-1144446613

   > And it is not clear whether we have pushed the new offset to children
   
   The suggestion is never to push offsets down within ArrayData, and so you 
should never have this ambiguity? 
   
   When constructing an instance of StructArray you "hydrate" the offsets to 
boxed fields to avoid having to recompute slices on access, but this does not 
modify the underlying ArrayData?


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