[jira] [Created] (FLINK-21792) Add a PythonFunctionRunnerDescriptor and unify the creation of all the PythonFunctionRunner

[Shang Yuanchun (Jira)]

Wei Zhong created FLINK-21792:
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             Summary: Add a PythonFunctionRunnerDescriptor and unify the creation of all the PythonFunctionRunner
                 Key: FLINK-21792
                 URL: https://issues.apache.org/jira/browse/FLINK-21792
             Project: Flink
          Issue Type: Improvement
          Components: API / Python
            Reporter: Wei Zhong


Currently almost all the Python function operators implement the createPythonFunctionRunner() method by themselves and most of the logic is same. We can add a PythonFunctionRunnerDescriptor and unify the creation of all the PythonFunctionRunners. 



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