[jira] [Created] (FLINK-19186) Add Python building blocks to make sure the basic functionality of Pandas Batch Group Aggregation could work

[Shang Yuanchun (Jira)]

Huang Xingbo created FLINK-19186:
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             Summary: Add Python building blocks to make sure the basic functionality of Pandas Batch Group Aggregation could work
                 Key: FLINK-19186
                 URL: https://issues.apache.org/jira/browse/FLINK-19186
             Project: Flink
          Issue Type: Sub-task
          Components: API / Python
            Reporter: Huang Xingbo
             Fix For: 1.12.0


We need to add a few Python building blocks such as PandasAggregateFunctionOperation, PythonAggregateFunction, etc for Pandas Aggregation execution.

This PR makes sure that a basic end to end Pandas Batch Group Aggregation could be executed.



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