Hello Michal, This FAQ entry may help you understanding the rebalance logic:
https://cwiki.apache.org/confluence/display/KAFKA/FAQ#FAQ-CanIpredicttheresultsoftheconsumerrebabalance%3F In a word, since we use a deterministic range partition in rebalance, unevenly or customized partition assignment is not possible for now, but we are looking into supporting customized partition assignment in post 0.8: https://cwiki.apache.org/confluence/display/KAFKA/Client+Rewrite Guozhang On Thu, Aug 22, 2013 at 11:00 AM, Michal Haris <michal.ha...@visualdna.com>wrote: > Hi, is it possible or has anybody tried/needed to balance partitions > between consumers unevenly or based on some custom function ? Ideally with > Kafka 0.7 > > Michal Haris > -- -- Guozhang