Github user mgaido91 commented on the issue:
https://github.com/apache/spark/pull/20856
@cloud-fan I do like the idea of generating the code on driver side. The
main issues I see are:
- In the generated code we reference external objects. We have to send
this array of references to all the executors;
- We should implement a mechanism for identifying which code runs which
part of the plan in order for the executors to be able to retrieve it... This
is probably feasible but I think we have to be very careful at it.
- nit: the generated code may be big, may sending it to all executors
cause performance issues?
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