Bryan Cutler created SPARK-22106:
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Summary: Remove support for 0-parameter pandas_udfs
Key: SPARK-22106
URL: https://issues.apache.org/jira/browse/SPARK-22106
Project: Spark
Issue Type: Improvement
Components: PySpark, SQL
Affects Versions: 2.3.0
Reporter: Bryan Cutler
SPARK-21190 Added support for vectorized pandas_udfs and allows a 0-parameter
udf to be created, but it must accept **kwargs to get the correct length of the
vector to return. This behavior is a confusing and awkward to implement and the
overall pandas_udf usage would be much cleaner if this was not allowed.
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