Github user BryanCutler commented on a diff in the pull request: https://github.com/apache/spark/pull/20531#discussion_r167024836 --- Diff: docs/sql-programming-guide.md --- @@ -1734,7 +1734,7 @@ For detailed usage, please see [`pyspark.sql.functions.pandas_udf`](api/python/p ### Supported SQL Types -Currently, all Spark SQL data types are supported by Arrow-based conversion except `MapType`, +Currently, all Spark SQL data types are supported by Arrow-based conversion except `BinaryType`, `MapType`, --- End diff -- I agree, we need to look into these details more before we can support this type
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