Github user datumbox commented on the issue:
https://github.com/apache/spark/pull/17059
I updated the exception message and I added Unit-tests to cover the
checkedCast method as @imatiach-msft suggested. I have not corrected the value
of regParam but I had a look and it is safe to do so.
Thanks everyone for their comments and recommendations. Please consider
merging this PR with master because many people are working lately on the ALS
and soon conflicts will arise.
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