Hi, Which version of kafka client are you using? I can't find this error message in the source code. When googling this error message, it showed the error is in Kafka v0.9.
Could you try to use the V3.0.0 and see if that issue still exist? Thank you. Luke On Thu, Oct 28, 2021 at 11:15 PM Kafka Life <lifekafka...@gmail.com> wrote: > Dear Kafka Experts > > We have set up a group.id (consumer ) = XXXXYYY > But when tried to connect to kafka instance : i get this error message. I > am sure this consumer (group id does not exist in kafka) .We user plain > text protocol to connect to kafka 2.8.0. Please suggest how to resolve this > issue. > > DEBUG AbstractCoordinator:557 - [Consumer clientId=XXXXX, groupId=XXXXYYY] > Attempt to join group failed due to unknown member id. >
