[jira] [Created] (FLINK-21861) Support StreamExecIncrementalGroupAggregate json serialization/deserialization

[Shang Yuanchun (Jira)]

godfrey he created FLINK-21861:
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             Summary: Support StreamExecIncrementalGroupAggregate json serialization/deserialization
                 Key: FLINK-21861
                 URL: https://issues.apache.org/jira/browse/FLINK-21861
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Planner
            Reporter: godfrey he
             Fix For: 1.13.0






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