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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