JingGe commented on a change in pull request #17286:
URL: https://github.com/apache/flink/pull/17286#discussion_r709268898



##########
File path: 
flink-connectors/flink-connector-kafka/src/test/java/org/apache/flink/streaming/connectors/kafka/table/KafkaChangelogTableITCase.java
##########
@@ -369,14 +380,19 @@ public void testKafkaMaxwellChangelogSource() throws 
Exception {
         Properties producerProperties = getStandardProps();
         producerProperties.setProperty("retries", "0");
         try {
-            stream.addSink(
-                    new FlinkKafkaProducer<>(
-                            topic,
-                            serSchema,
-                            producerProperties,
-                            partitioner,
-                            EXACTLY_ONCE,
-                            DEFAULT_KAFKA_PRODUCERS_POOL_SIZE));
+            stream.sinkTo(
+                    KafkaSink.<String>builder()
+                            .setBootstrapServers(
+                                    producerProperties.getProperty(
+                                            
ProducerConfig.BOOTSTRAP_SERVERS_CONFIG))
+                            .setRecordSerializer(
+                                    KafkaRecordSerializationSchema.builder()
+                                            .setTopic(topic)
+                                            
.setValueSerializationSchema(serSchema)
+                                            .setPartitioner(partitioner)
+                                            .build())
+                            
.setDeliverGuarantee(DeliveryGuarantee.EXACTLY_ONCE)
+                            .build());

Review comment:
       It might be a good idea to extract a private method to avoid triple 
duplicated code.




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