I was trying to upgrade an 0.8.2.1 broker cluster to 0.9.0.0 by following the instructions here:
http://kafka.apache.org/documentation.html#upgrade
After upgrading one broker, with inter.broker.protocol.version=0.8.2.X
set, I get ACK error 2 (InvalidMessage) when I try to send produce
requests. When I revert the broker to 0.8.2.1 the errors go away. Has
anyone run into this problem, or have any suggestions?
Thanks,
Dave
