Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/11939#discussion_r59822529
--- Diff: python/pyspark/ml/param/__init__.py ---
@@ -389,8 +391,8 @@ def copy(self, extra=None):
if extra is None:
extra = dict()
that = copy.copy(self)
- that._paramMap = self.extractParamMap(extra)
- return that
+ that._paramMap = {}
--- End diff --
I think it's OK to leave this as is. It's within the Params class, and
there is no need to use copyValues, which is meant to handle different classes.
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