[jira] [Created] (FLINK-14018) Add Python building blocks to make sure the basic functionality of Python ScalarFunction could work

[Shang Yuanchun (Jira)]

Dian Fu created FLINK-14018:
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             Summary: Add Python building blocks to make sure the basic functionality of Python ScalarFunction could work
                 Key: FLINK-14018
                 URL: https://issues.apache.org/jira/browse/FLINK-14018
             Project: Flink
          Issue Type: Sub-task
          Components: API / Python
            Reporter: Dian Fu
             Fix For: 1.10.0


We need to add a few Python building blocks such as ScalarFunctionOperation, BigIntCoder, VarcharCoder, etc for Python ScalarFunction execution. ScalarFunctionOperation is subclass of Operation in Beam and BigIntCoder, VarcharCoder, etc are subclasses of Coder in Beam. These classes will be registered into the Beam’s portability framework to make sure they take effects.

This PR makes sure that a basic end to end Python UDF could be executed.



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