Github user mgaido91 commented on the issue:
https://github.com/apache/spark/pull/21352
in most of the cases these are lazy fields which are called only on the
execution, so I don't think they are serialized. And in some cases (I am
thinking to the ordering ones) with this patch we are executing the same
computation for each row, which means a performance regression.
I am not sure honestly we do need this. @cloud-fan what do you think?
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