[jira] [Created] (FLINK-20668) Introduce translateToExecNode method for FlinkPhysicalRel

[Shang Yuanchun (Jira)]

godfrey he created FLINK-20668:
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             Summary: Introduce translateToExecNode method for FlinkPhysicalRel
                 Key: FLINK-20668
                 URL: https://issues.apache.org/jira/browse/FLINK-20668
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Planner
            Reporter: godfrey he


Currently, we introduce ExecGraphGenerator to translate a graph of FlinkPhysicalRel to a ExecNode graph. While as more and more ExecNode supported, ExecGraphGenerator is hard to maintain. So we introduce FlinkPhysicalRel#translateToExecNode to create specific ExecNode in each physical RelNode, and ExecGraphGenerator is used to build the whole graph based on the translated ExecNode, including connecting the input/output nodes, handling the rel visitor, handle some special nodes (such as, Exchange), etc.



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