[flink] Change the access modifier of sink and operators before sink

apache / paimon

Apache Paimon is a lake format that enables building a Realtime Lakehouse Architecture with Flink and Spark for both streaming and batch operations.

https://paimon.apache.org/

Apache License 2.0

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Closed yunfengzhou-hub closed 4 days ago

yunfengzhou-hub commented 5 days ago

This PR modifies the access of classes and methods related to flink sink.