[jira] [Created] (FLINK-15548) Make KeyedCoProcessOperatorWithWatermarkDelay extends KeyedCoProcessOperator instead of LegacyKeyedCoProcessOperator

[Shang Yuanchun (Jira)]

wangsan created FLINK-15548:
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             Summary: Make KeyedCoProcessOperatorWithWatermarkDelay extends KeyedCoProcessOperator instead of LegacyKeyedCoProcessOperator
                 Key: FLINK-15548
                 URL: https://issues.apache.org/jira/browse/FLINK-15548
             Project: Flink
          Issue Type: Improvement
          Components: Table SQL / Runtime
    Affects Versions: 1.10.0
            Reporter: wangsan
             Fix For: 1.10.0


`LegacyKeyedCoProcessOperator` is marked as deprecated, we should make `KeyedCoProcessOperatorWithWatermarkDelay` extends `KeyedCoProcessOperator` instead.



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