May be right place to add such optimization within https://cwiki.apache.org/confluence/display/KAFKA/Hierarchical+Topics ?
-----Исходное сообщение----- От: Guozhang Wang [mailto:wangg...@gmail.com] Отправлено: Wednesday, May 28, 2014 8:57 PM Кому: users@kafka.apache.org Тема: Re: how to control assign policy for consumers With high-level consumers you cannot control the assignment of partitions to consumers, and if partitions are located across all brokers each consumer is likely to connect to each of the brokers. One (little hacky) thing you can do is to manually assign the partitions to brokers such that each broker i of topic t is in broker i % 3, the for consumer fetching partition i of topic t, it will only connect to broker i % 3. By default the assignment is not aligned hence you will likely to have TCP between each pair of consumer/broker. Guozhang On Wed, May 28, 2014 at 8:15 AM, Рябков Алексей Николаевич < a.ryab...@ntc-vulkan.ru> wrote: > How can I tell consumer to connect to one broker ...For example: > - I have 3 topic and 3 broker...also each topic have 6 partitions... > - I than start 6 consumers to listen this 3 topics...And in such > case we can found from 6 (each consumer connect only to one broker) to > 18 (each consumer connect to every broker) TCP connection .... How I > can minimize network connections? > > With best regards, Aleksey Ryabkov > > -- -- Guozhang
