[jira] [Created] (FLINK-18463) Make the "input_types" parameter of the Python udf decorator optional

[Shang Yuanchun (Jira)]

Wei Zhong created FLINK-18463:
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             Summary:  Make the "input_types" parameter of the Python udf decorator optional
                 Key: FLINK-18463
                 URL: https://issues.apache.org/jira/browse/FLINK-18463
             Project: Flink
          Issue Type: Improvement
          Components: API / Python
            Reporter: Wei Zhong


In current design, the input types of the Python UDF is unnecessary to be declared explicitly. For user convenience, we can make the "input_types" parameter of the Python UDF decorator optional.



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