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Matthias J. Sax commented on KAFKA-7483: ---------------------------------------- I see. So it's a two line fix? Sure, we can do that. Sorry for the confusion. > Streams should allow headers to be passed to Serializer > ------------------------------------------------------- > > Key: KAFKA-7483 > URL: https://issues.apache.org/jira/browse/KAFKA-7483 > Project: Kafka > Issue Type: Bug > Components: streams > Reporter: Kamal Chandraprakash > Assignee: Kamal Chandraprakash > Priority: Major > > We are storing schema metadata for record key and value in the header. > Serializer, includes this metadata in the record header. While doing simple > record transformation (x transformed to y) in streams, the same header that > was passed from source, pushed to the sink topic. This leads to error while > reading the sink topic. > We should call the overloaded `serialize(topic, headers, object)` method in > [RecordCollectorImpl|https://github.com/apache/kafka/blob/trunk/streams/src/main/java/org/apache/kafka/streams/processor/internals/RecordCollectorImpl.java#L156] > which in-turn adds the correct metadata in the record header. > With this sink topic reader have the option to read all the values for a > header key using `Headers#headers` [or] only the overwritten value using > `Headers#lastHeader` -- This message was sent by Atlassian JIRA (v7.6.3#76005)