[jira] [Created] (FLINK-21549) Support json serialization/deserialization for the push-down results

[Shang Yuanchun (Jira)]

godfrey he created FLINK-21549:
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             Summary: Support json serialization/deserialization for the push-down results
                 Key: FLINK-21549
                 URL: https://issues.apache.org/jira/browse/FLINK-21549
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Planner
            Reporter: godfrey he
             Fix For: 1.13.0


Currently, Flink supports different kinds of push-down: projection, filter, watermark, limit, partition, reading-metadata. The push-down result should also be serialized to the json plan and then we can get the correct ExecNode plan from the json plan. To avoid modifying each connector, we can store the push-down result into the TableSourceTable during the Calcite optimization phase, and store the push-down result into DynamicTableSourceSpec in the ExecNode graph.



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