mjsax commented on PR #13860: URL: https://github.com/apache/kafka/pull/13860#issuecomment-1652102807
With KIP-904 we changes some serialization format inside an internal repartition topic (cf https://cwiki.apache.org/confluence/display/KAFKA/KIP-904%3A+Kafka+Streams+-+Guarantee+subtractor+is+called+before+adder+if+key+has+not+changed) To upgrade KS correctly, you need to do two rolling bounces (first one with `upgrade.from = 3.4` -- or whatever version you are using), and second one with the config set back to `null`. Thus, it seems, while the upgrade path for KP-904 itself works, the `AssignorConfiguration` you mentioned would not recognize `3.4.0` an thus crash Kafka Streams. We did not get to finish the system test for this upgrade (it's a WIP PR), that I assume would have caught this issue... -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
