Github user mgaido91 commented on the issue:
https://github.com/apache/spark/pull/20692
thanks @rdblue, I updated the PR and now only the leaf nodes contain the
data type information.
Honestly I would avoid to have another option, since we already have the
extended one. I think it could become confusing if we add too many options.
But if you all agree on a different solution let me know.
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