Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/5049#discussion_r26547652
--- Diff: python/pyspark/mllib/common.py ---
@@ -70,8 +70,8 @@ def _py2java(sc, obj):
obj = _to_java_object_rdd(obj)
elif isinstance(obj, SparkContext):
obj = obj._jsc
- elif isinstance(obj, list) and (obj or isinstance(obj[0], JavaObject)):
- obj = ListConverter().convert(obj, sc._gateway._gateway_client)
+ elif isinstance(obj, list):
+ obj = ListConverter().convert([_py2java(sc, x) for x in obj],
sc._gateway._gateway_client)
--- End diff --
Correct. Except that we pass in vectors because we call
`_convert_to_vector` in `KMeansModel.save`.
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