Github user actuaryzhang commented on the issue:
https://github.com/apache/spark/pull/18025
@HyukjinKwon Thanks for catching this. They were incorrectly labeled as
math functions instead of aggregate functions in SparkR. And that's why I did
not change them.
New commit fixed this now. Note they are still documented in their own Rd
because there is also a method defined for SparkDataFrame. I made some cleaning
and updated the example to be runnable.
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