[jira] [Created] (FLINK-20512) Introduce getDescription, getOutputType, replaceInputEdge methods for ExecNode

[Shang Yuanchun (Jira)]

godfrey he created FLINK-20512:
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             Summary: Introduce getDescription, getOutputType, replaceInputEdge methods for ExecNode
                 Key: FLINK-20512
                 URL: https://issues.apache.org/jira/browse/FLINK-20512
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Planner
            Reporter: godfrey he


We will introduce {{getDescription()}} method which returns the description information of the ExecNode,
introduce {{getOutputType()}} method which returns the output {{RowType}} of the ExecNode,
introduce {{replaceInputEdge(int ordinalInParent, ExecEdge newInputEdge)}} method which can update the input edge at the given index.

Note: {{RelNode}} also has {{getDescription()}} method, so before we finish all separation work, we will introduce {{getDesc()}} instead of {{getDescription()}} to avoid compile error.



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