holdenk created SPARK-23836:
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Summary: Support returning StructType & MapType in Arrow's
"scalar" UDFS (or similar)
Key: SPARK-23836
URL: https://issues.apache.org/jira/browse/SPARK-23836
Project: Spark
Issue Type: Improvement
Components: PySpark
Affects Versions: 2.4.0
Reporter: holdenk
Currently not all of the supported types can be returned from the scalar pandas
UDF type. This means if someone wants to return a struct type doing a map
operation right now they either have to do a "junk" groupBy or use the
non-vectorized results.
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