Hi Chad, this talk around 24:00 clearly explains what you’re seeing https://www.confluent.io/events/kafka-summit-europe-2021/failing-to-cross-the-streams-lessons-learned-the-hard-way/ <https://www.confluent.io/events/kafka-summit-europe-2021/failing-to-cross-the-streams-lessons-learned-the-hard-way/>
Gilles > On 30 Oct 2021, at 04:02, Chad Preisler <chad.preis...@gmail.com> wrote: > > Hello, > > I have a stream application that does a KStream to KTable left join. We > seem to be occasionally missing joins (KTable side is null). > > I'm wondering if someone can point me to the Kafka streams internal code > that reads records for the join? I've poked around the Kafka code base, but > there is a lot there. I imagine there is some consumer poll for each side > of the join, and possibly a background thread for reading the KTable topic. > > I figure there are several possible causes of this issue, and since nothing > is really jumping out in my code, I was going to start looking at the Kafka > code to see if there is something I can do to fix this. > > Thanks, > Chad -- Funding Circle Limited is authorised and regulated by the Financial Conduct Authority under firm registration number 722513. Funding Circle is not covered by the Financial Services Compensation Scheme. Registered in England (Co. No. 06968588) with registered office at 71 Queen Victoria Street, London EC4V 4AY.
