Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/12850
I discussed it with @davies offline and here is our conclusion:
1. This feature is not that important, as users can always do it manually,
i.e. change the add/multiply order, which is not a lot effort.
2. When we have this future, users lose the control of the execution order.
e.g. they may add UDFs and other literals together and they want a
deterministic execution order.
3. other corner cases like overflow
In general, we think this feature brings too much nondeterminacy compared
to the benefits it brings. What do you think?
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