[jira] [Created] (FLINK-13075) Project pushdown rule shouldn't require the TableSource return a modified schema in blink planner

[Shang Yuanchun (Jira)]

Jark Wu created FLINK-13075:
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             Summary: Project pushdown rule shouldn't require the TableSource return a modified schema in blink planner
                 Key: FLINK-13075
                 URL: https://issues.apache.org/jira/browse/FLINK-13075
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / Planner
            Reporter: Jark Wu


As the javadoc of {{org.apache.flink.table.sources.ProjectableTableSource#projectFields}} said, the table schema of the TableSource copy must not be modified by this method. However, {{PushProjectIntoTableSourceScanRule}} in blink planner requires the returning a table source with the modified table schema. This conflict with the javadoc and result in the TableSource works for flink planner can't work for blink planner.



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