dmariassy commented on code in PR #109:
URL: 
https://github.com/apache/flink-connector-kafka/pull/109#discussion_r1697590257


##########
flink-connector-kafka/src/test/java/org/apache/flink/streaming/connectors/kafka/table/KafkaDynamicTableFactoryTest.java:
##########
@@ -616,6 +617,10 @@ public void testTableSink() {
         final SinkV2Provider sinkProvider = (SinkV2Provider) provider;
         final Sink<RowData> sinkFunction = sinkProvider.createSink();
         assertThat(sinkFunction).isInstanceOf(KafkaSink.class);
+        assertThat(actualKafkaSink.listWritableMetadata())

Review Comment:
   👍🏻 



##########
flink-connector-kafka/src/main/java/org/apache/flink/streaming/connectors/kafka/table/DynamicKafkaRecordSerializationSchema.java:
##########
@@ -144,14 +155,41 @@ public void open(
         valueSerialization.open(context);
     }
 
+    private String getTargetTopic(RowData element) {
+        if (topics != null && topics.size() == 1) {
+            // If topics is a singleton list, we only return the provided 
topic.
+            return topics.get(0);
+        }
+        final String topic = readMetadata(element, 
KafkaDynamicSink.WritableMetadata.TOPIC);

Review Comment:
   [nit] Naming is hard but I think it'd help with readability if this var was 
called something like `targetTopic` or `recordTopic`



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