Huang Xingbo created FLINK-19169:
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Summary: Support Pandas UDAF in PyFlink (FLIP-137)
Key: FLINK-19169
URL: https://issues.apache.org/jira/browse/FLINK-19169
Project: Flink
Issue Type: Improvement
Components: API / Python
Reporter: Huang Xingbo
Fix For: 1.12.0
Pandas UDF has been supported in FLINK 1.11
([FLIP-97|https://cwiki.apache.org/confluence/display/FLINK/FLIP-97%3A+Support+Scalar+Vectorized+Python+UDF+in+PyFlink]).
It solves the high serialization/deserialization overhead in Python UDF and
makes it convenient to leverage the popular Python libraries such as Pandas,
Numpy, etc. Since Pandas UDF has so many advantages, we want to support Pandas
UDAF to extend usage of Pandas UDF.
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