[FLINK-35255][cdc][runtime] DataSinkWriterOperator adds overrides for the snapshotState and processWatermark methods (#3271)

Author: yanghuaiGit

flink-cdc-runtime/src/main/java/org/apache/flink/cdc/runtime/operators/sink/DataSinkWriterOperator.java

@@ -29,16 +29,19 @@
 import org.apache.flink.cdc.common.schema.Schema;
 import org.apache.flink.runtime.jobgraph.OperatorID;
 import org.apache.flink.runtime.state.StateInitializationContext;
+import org.apache.flink.runtime.state.StateSnapshotContext;
 import org.apache.flink.streaming.api.connector.sink2.CommittableMessage;
 import org.apache.flink.streaming.api.graph.StreamConfig;
 import org.apache.flink.streaming.api.operators.AbstractStreamOperator;
 import org.apache.flink.streaming.api.operators.BoundedOneInput;
 import org.apache.flink.streaming.api.operators.ChainingStrategy;
 import org.apache.flink.streaming.api.operators.OneInputStreamOperator;
 import org.apache.flink.streaming.api.operators.Output;
+import org.apache.flink.streaming.api.watermark.Watermark;
 import org.apache.flink.streaming.runtime.streamrecord.StreamRecord;
 import org.apache.flink.streaming.runtime.tasks.ProcessingTimeService;
 import org.apache.flink.streaming.runtime.tasks.StreamTask;
+import org.apache.flink.streaming.runtime.watermarkstatus.WatermarkStatus;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
@@ -123,6 +126,26 @@ public void initializeState(StateInitializationContext context) throws Exception
                 .initializeState(context);
     }
 
+    @Override
+    public void snapshotState(StateSnapshotContext context) throws Exception {
+        this.<AbstractStreamOperator<CommittableMessage<CommT>>>getFlinkWriterOperator()
+                .snapshotState(context);
+    }
+
+    @Override
+    public void processWatermark(Watermark mark) throws Exception {
+        super.processWatermark(mark);
+        this.<AbstractStreamOperator<CommittableMessage<CommT>>>getFlinkWriterOperator()
+                .processWatermark(mark);
+    }
+
+    @Override
+    public void processWatermarkStatus(WatermarkStatus watermarkStatus) throws Exception {
+        super.processWatermarkStatus(watermarkStatus);
+        this.<AbstractStreamOperator<CommittableMessage<CommT>>>getFlinkWriterOperator()
+                .processWatermarkStatus(watermarkStatus);
+    }
+
     @Override
     public void processElement(StreamRecord<Event> element) throws Exception {
         Event event = element.getValue();