viirya commented on a change in pull request #24997: [SPARK-28198][PYTHON] Add
mapPartitionsInPandas to allow an iterator of DataFrames
URL: https://github.com/apache/spark/pull/24997#discussion_r298947615
##########
File path: python/pyspark/sql/dataframe.py
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@@ -2192,6 +2193,51 @@ def toPandas(self):
_check_series_convert_timestamps_local_tz(pdf[field.name], timezone)
return pdf
+ def mapPartitionsInPandas(self, udf):
+ """
+ Maps each partition of the current :class:`DataFrame` using a pandas
udf and returns
+ the result as a `DataFrame`.
+
+ The user-defined function should take an iterator of
`pandas.DataFrame`s and return another
Review comment:
Various function types are introduced in `pandas_udf`'s doc. Since this adds
new usage of `SCALAR_ITER`, we should modify the doc there too?
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