Hi Churu, Brokers are actually not aware of the consumer groups, the consumer groups is maintained within the consumers (and registered in ZK) to achieve load balance. After the group has decided who-consume-which-partition, then each consumer will do their fetching independently and send fetching requests to the brokers. Brokers on the other hand will just blindly respond to the fetch requests.
Hope this helps. Guozhang On Fri, Mar 14, 2014 at 4:50 PM, Churu Tang <ct...@rubiconproject.com>wrote: > Hi, > > "Consumers label themselves with a consumer group name", and consumer > group name should be global across each Kafka cluster. However, when I > check the API, there is no "consumer group name" included in any kind of > request(metadata, produce, fetch, offset). Does the broker know about the > consumer group name? > > Thanks for your time! > > Cheers, > churu -- -- Guozhang
