Github user jkbradley commented on the issue:
https://github.com/apache/spark/pull/17090
@MLnick Thanks *a lot* for the detailed tests! I really appreciate it. In
this case, are you OK with the approach in the current PR (pending reviews)?
One thing we should confirm is what you think of the input/output schema
for these methods. It'd be nice to have the schema match what you think best
for the transform-based recommendAll.
Re: design: I saw the discussions in
https://issues.apache.org/jira/browse/SPARK-13857 but I didn't see a clear
statement of pros & cons leading to a design decision. I'm sorry about not
having time to get involved with the discussions, but I'd like to help out as
useful in the coming months.
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