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From Guozhang Wang <wangg...@gmail.com>
Subject Re: how to control assign policy for consumers
Date Wed, 28 May 2014 16:57:10 GMT
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.ryabkov@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

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