Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/22070#discussion_r209242281
--- Diff: examples/src/main/python/sql/arrow.py ---
@@ -95,12 +95,12 @@ def grouped_map_pandas_udf_example(spark):
("id", "v"))
@pandas_udf("id long, v double", PandasUDFType.GROUPED_MAP)
- def substract_mean(pdf):
+ def subtract_mean(pdf):
--- End diff --
And this method name change should be OK as it's just in an example
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