alexeyt820 commented on a change in pull request #6615: [FLINK-8354]
[flink-connectors] Add ability to access and provider Kafka headers
URL: https://github.com/apache/flink/pull/6615#discussion_r250467958
##########
File path:
flink-connectors/flink-connector-kafka-base/src/main/java/org/apache/flink/streaming/util/serialization/KeyedSerializationSchema.java
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@@ -55,4 +57,13 @@
* @return null or the target topic
*/
String getTargetTopic(T element);
+
+ /**
+ *
+ * @param element The incoming element to be serialized
+ * @return collection of headers (maybe empty)
+ */
+ default Iterable<Map.Entry<String, byte[]>> headers(T element) {
Review comment:
@azagrebin, so you suggest to have Flink class to represent Kafka Header
instead of Map.Entry?
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