Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/10469#discussion_r50848128
--- Diff: python/pyspark/ml/wrapper.py ---
@@ -82,13 +71,16 @@ def _transfer_params_to_java(self):
pair = self._make_java_param_pair(param, paramMap[param])
self._java_obj.set(pair)
- def _transfer_params_from_java(self):
+ def _transfer_params_from_java(self, withParent=False):
"""
Transforms the embedded params from the companion Java object.
"""
sc = SparkContext._active_spark_context
+ parent = self._java_obj.uid()
for param in self.params:
if self._java_obj.hasParam(param.name):
+ if withParent:
+ param.parent = parent
--- End diff --
We should also copy ```parent``` from peer java object if the python object
is instantiated by ```load```.
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