Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/11043#discussion_r51674846
--- Diff: python/pyspark/ml/wrapper.py ---
@@ -79,8 +79,9 @@ def _transfer_params_from_java(self):
for param in self.params:
if self._java_obj.hasParam(param.name):
java_param = self._java_obj.getParam(param.name)
- value = _java2py(sc,
self._java_obj.getOrDefault(java_param))
- self._paramMap[param] = value
+ if self._java_obj.hasDefault(java_param):
--- End diff --
We should check by ```isDefined``` rather than ```hasDefault``` here.
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