[jira] [Created] (FLINK-22612) Reconstruct coders in PyFlink

[Shang Yuanchun (Jira)]

Huang Xingbo created FLINK-22612:
------------------------------------

             Summary: Reconstruct coders in PyFlink
                 Key: FLINK-22612
                 URL: https://issues.apache.org/jira/browse/FLINK-22612
             Project: Flink
          Issue Type: Improvement
          Components: API / Python
    Affects Versions: 1.14.0
            Reporter: Huang Xingbo
            Assignee: Huang Xingbo
             Fix For: 1.14.0


Now, PyFlink has introduced many top-level coder. The top-level coder is defined as used by `Python Operation` directly. Currently, some top-level coder comes with the semantics of function, such as `TableFunctionCoder`. In fact, we need to remove this semantic and remove many coders such as `TableFunctionCoder`, `AggregateFunctionCoder` and so on. For the data structure type to be processed, there will only be `FlattenRowCoder`(used in udf, udtf.., the type of data will be List), `TopRowCoder`(used in udaf, udtagg, the type of data will be Row or InternalRow), `RawCoder`(used in datastream, the type of data will be raw data type), `ArrowCoder`(used in pandas udf, the type of data will be pandas data structure).



--
This message was sent by Atlassian Jira
(v8.3.4#803005)