zero323 commented on a change in pull request #34513:
URL: https://github.com/apache/spark/pull/34513#discussion_r756781924
##########
File path: python/pyspark/mllib/stat/_statistics.py
##########
@@ -168,12 +190,34 @@ def corr(x, y=None, method=None):
raise TypeError("Use 'method=' to specify method name.")
if not y:
- return callMLlibFunc("corr", x.map(_convert_to_vector),
method).toArray()
+ return cast(
+ JavaObject, callMLlibFunc("corr", x.map(_convert_to_vector),
method)
+ ).toArray()
else:
- return callMLlibFunc("corr", x.map(float), y.map(float), method)
+ return cast(
+ Union[float, Matrix],
Review comment:
That's not `Union`. If you are in this specific branch, you have two
`RDD[float]` and result should be float.
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