Matthias J. Sax created KAFKA-4001:
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Summary: Improving join semantics in Kafka Stremas
Key: KAFKA-4001
URL: https://issues.apache.org/jira/browse/KAFKA-4001
Project: Kafka
Issue Type: Bug
Components: streams
Reporter: Matthias J. Sax
Assignee: Matthias J. Sax
Fix For: 0.10.1.0
Kafka Streams supports three types of joins:
* KStream-KStream
* KStream-KTable
* KTable-KTable
Furthermore, Kafka Streams supports the join variant, namely
* inner join
* left join
* outer join
Not all combination of "type" and "variant" are supported.
*The problem is, that the semantics of the different joins do use different
semantics (and are thus inconsistent).*
With this ticket, we want to
* introduce unique semantics over all joins
* improve handling of "null"
* add missing inner KStream-KTable join
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