[GitHub] spark issue #17059: [SPARK-19733][ML]Removed unnecessary castings and refact...

[datumbox <gi...@git.apache.org>]

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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