HyukjinKwon commented on a change in pull request #34179:
URL: https://github.com/apache/spark/pull/34179#discussion_r722841974



##########
File path: python/pyspark/pandas/tests/test_dataframe.py
##########
@@ -6000,6 +6000,13 @@ def test_combine_first(self):
             expected_pdf = pd.DataFrame({"A": [None, 0], "B": [4.0, 1.0], "C": 
[3, 3]})
             self.assert_eq(expected_pdf, psdf1.combine_first(psdf2))
 
+    def test_multi_index_dtypes(self):

Review comment:
       Let's start following PySpark's convention now since we finished initial 
porting. Can you add a comment with JIRA prefix? See also 
https://spark.apache.org/contributing.html

##########
File path: python/pyspark/pandas/indexes/multi.py
##########
@@ -375,6 +375,13 @@ def name(self) -> Name:
     def name(self, name: Name) -> None:
         raise PandasNotImplementedError(class_name="pd.MultiIndex", 
property_name="name")
 
+    @property
+    def dtypes(self) -> pd.Series:

Review comment:
       Let;s also add versionadded directive in docstring.




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