Bryan Cutler created SPARK-21404:
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Summary: Simple Vectorized Python UDFs using Arrow
Key: SPARK-21404
URL: https://issues.apache.org/jira/browse/SPARK-21404
Project: Spark
Issue Type: Improvement
Components: PySpark, SQL
Affects Versions: 2.3.0
Reporter: Bryan Cutler
Using Arrow, Python UDFs can be evaluated in vectorized form by using the
column data as Pandas.Series. This will offer a performance gain by computing
the return column data in one operation instead of iterating over each row to
calculate a single element and appending to a list, as is currently done.
This is designed as a preliminary step for the existing SPIP: Vectorized UDFs
in Python SPARK-21190 that could be used as a basis for whatever expanded API
is decided upon there.
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