linar-jether commented on a change in pull request #29719:
URL: https://github.com/apache/spark/pull/29719#discussion_r678064227
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File path: python/pyspark/sql/pandas/conversion.py
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@@ -297,8 +297,11 @@ class SparkConversionMixin(object):
"""
Min-in for the conversion from pandas to Spark. Currently, only
:class:`SparkSession`
can use this class.
+ pandasRDD=True creates a DataFrame from an RDD of pandas dataframes
+ (currently only supported using arrow)
Review comment:
That's in case the user wants to infer the schema (so we have to peek
into the rdd), but in case the use does specify the schema, there's no need to
peek, and we're left with no other option to tell which code path we need
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