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Posted to jira@kafka.apache.org by "Paul Snively (Jira)" <ji...@apache.org> on 2020/03/02 16:10:00 UTC

[jira] [Created] (KAFKA-9636) Simple join of two KTables fails

Paul Snively created KAFKA-9636:
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             Summary: Simple join of two KTables fails
                 Key: KAFKA-9636
                 URL: https://issues.apache.org/jira/browse/KAFKA-9636
             Project: Kafka
          Issue Type: Bug
          Components: streams
    Affects Versions: 2.4.1
            Reporter: Paul Snively
         Attachments: merge_issue.zip

Attempting to join two KTables yields a `Topology` that, when tested with `TopologyTestDriver` by adding records to the two `TestInputTopic`s, results in an empty `TestOutputTopic`.

I'm attaching a very small reproduction. The code is in Scala. The project is therefore an "sbt" project. You can reproduce the results from your shell with `sbt test`. The failure output will include the `describe` of the `Topology` in question.



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