Sa, Usually you would not want to set up kafka brokers at the same machines with zk nodes, as that will add depending failures to the server cluster.
Back to your original question, it seems your zk nodes do not form an ensemble, since otherwise their zk data should be the same. Guozhang On Thu, Oct 9, 2014 at 11:37 AM, Sa Li <sal...@gmail.com> wrote: > Hi, All > > I setup a 3-node kafka cluster on top of 3-node zk ensemble. Now I launch 1 > broker on each node, the brokers will be randomly distributed to zk > ensemble, see > > DO-mq-dev.1 > [zk: localhost:2181(CONNECTED) 1] ls /brokers/ids > [0, 1] > pof-kstorm-dev1.2 > [zk: localhost:2181(CONNECTED) 1] ls /brokers/ids > [] > pof-kstorm-dev2.3 > [zk: localhost:2181(CONNECTED) 1] ls /brokers/ids > [2] > > which means zk1 hosts 2 brokers, zk3 hosts 1 brokers, that will raise a > problem, that I am unable to create a topic with replications, say 3, it > will throw such exceptions > > Error while executing topic command replication factor: 3 larger than > available brokers: 0 > > Is there any ways that I can create a topic which can be replicated > throughout entire zk ensemble as I know we will have to introduce more than > 1 broker in single zk Server if we want to be able to create replicated > topics/ > > thanks > > -- > > Alec Li > -- -- Guozhang
