Github user IgorBerman commented on the issue:
https://github.com/apache/spark/pull/20640
@squito, @susanxhuynh no worries, I have my internal patch.
As a side note, I'm starting to think that my first proposition of
introducing new config that will just override this hardcoded constant(2) will
be most pragmatic approach in this situation. It's not clear to me when
SPARK-16630 will be resolved(open from 1.6). On the other hand, the price would
be to introduce new config(maybe without documenting it) for people that need
fix which will be deprecated as soon as SPARK-16630 + this change-set will
provide as better systematic solution.
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