Hi I got the same behaviour yesterday while trying to upgrade my KafkaStreams app from 2.4.1 to 2.7.0. Our brokers are on 2.2.1.
Looking at KAFKA-9752 it mentions the cause being two other tickets: https://issues.apache.org/jira/browse/KAFKA-7610 https://issues.apache.org/jira/browse/KAFKA-9232 Although the first ticket seems fixed in 2.2.0, the latter was just fixed in 2.2.3, so my brokers shouldn't have the code for KAFKA-9232. But what I don't understand is that KAFKA-9752 says: "Note that this is only possible if 1) we have a consumer using an old JoinGroup version, 2) the consumer times out and disconnects from its initial JoinGroup request." In this case, I guess my consumer is not using an old JoinGroup, as my consumers (KafkaStreams) are on 2.7.0... Thanks Murilo On Fri, 26 Feb 2021 at 06:06, Péter Sinóros-Szabó <peter.sinoros-sz...@transferwise.com.invalid> wrote: > Hey Sophie, > > thanks for the link, I was checking that ticket, but I was not sure if it > is relevant for our case. > Eventually we "fixed" our problem with reducing the session.timeout.ms (it > was set to a high value for other reasons). > > But today, in another service, we faced the same problem when upgrading the > Kafka Client from 2.5.1 to 2.6.1. We are still using 2.4.1 on the brokers. > Do you think the same problem (KAFKA-9752) might cause this problem too? > It's hard to judge just based on the description of that ticket. > > Thanks, > Peter >