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https://issues.apache.org/jira/browse/FLINK-8354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16593905#comment-16593905
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ASF GitHub Bot commented on FLINK-8354:
---------------------------------------
yanghua 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_r213034632
##########
File path:
flink-connectors/flink-connector-kafka-base/src/main/java/org/apache/flink/streaming/util/serialization/KeyedDeserializationSchema.java
##########
@@ -54,4 +55,20 @@
* @return True, if the element signals end of stream, false otherwise.
*/
boolean isEndOfStream(T nextElement);
+
+ /**
+ * Deserializes the byte message.
+ *
+ * @param messageKey the key as a byte array (null if no key has been
set).
+ * @param message The message, as a byte array (null if the message was
empty or deleted).
Review comment:
missed topic parameter description.
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> Flink Kafka connector ignores Kafka message headers
> -----------------------------------------------------
>
> Key: FLINK-8354
> URL: https://issues.apache.org/jira/browse/FLINK-8354
> Project: Flink
> Issue Type: Bug
> Components: Kafka Connector
> Environment: Kafka 0.11.0.0
> Flink 1.4.0
> flink-connector-kafka-0.11_2.11
> Reporter: Mohammad Abareghi
> Assignee: Aegeaner
> Priority: Major
> Labels: pull-request-available
>
> Kafka has introduced notion of Header for messages in version 0.11.0.0
> https://issues.apache.org/jira/browse/KAFKA-4208.
> But flink-connector-kafka-0.11_2.11 which supports kafka 0.11.0.0 ignores
> headers when consuming kafka messages.
> It would be useful in some scenarios, such as distributed log tracing, to
> support message headers to FlinkKafkaConsumer011 and FlinkKafkaProducer011.
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