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Nikolay Izhikov reassigned KAFKA-8455: -------------------------------------- Assignee: Nikolay Izhikov (was: Cem Ozen) > Add NothingSerde to Serdes > -------------------------- > > Key: KAFKA-8455 > URL: https://issues.apache.org/jira/browse/KAFKA-8455 > Project: Kafka > Issue Type: Improvement > Components: streams > Reporter: John Roesler > Assignee: Nikolay Izhikov > Priority: Minor > Labels: beginner, needs-kip, newbie, newbie++ > > Often, when reading an input topic, the key is expected to be null, but > there's actually no way to represent this fact in Consumed, leading to > confusing type signatures down the topology. > For example, you might use the BytesSerde, but then you have a > KStream<Bytes,...>. When maintaining a large application, this becomes a > hazard, since you'd need to "be really careful" not to try and dereference > the key at any point, since you actually know it's always null. > Much better would be to actually represent the fact that the key is null, > using the Void type. One such example of this is the NothingSerde I wrote > here: > https://github.com/confluentinc/kafka-streams-examples/blob/5.2.1-post/src/test/java/io/confluent/examples/streams/IntegrationTestUtils.java#L465 > After some conversations, I've come to believe this would actually be a > useful addition to the main Serdes collection. -- This message was sent by Atlassian Jira (v8.3.4#803005)