Robin Moffatt created KAFKA-7497:
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Summary: Kafka Streams should support self-join on streams
Key: KAFKA-7497
URL: https://issues.apache.org/jira/browse/KAFKA-7497
Project: Kafka
Issue Type: Bug
Reporter: Robin Moffatt
ref [https://github.com/confluentinc/ksql/issues/2030]
There are valid reasons to want to join a stream to itself, but Kafka Streams
does not currently support this ({{Invalid topology: Topic foo has already been
registered by another source.}}). To perform the join requires creating a
second stream as a clone of the first, and then doing a join between the two.
This is a clunky workaround and results in unnecessary duplication of data.
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