Deepak, You should getting following error and kafka server will shutdown itself it it sees same brokerid registered in zookeeper. " Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer) java.lang.RuntimeException: A broker is already registered on the path /brokers/ids/0. This probably indicates that you either have configured a brokerid that is already in use, or else you have shutdown this broker and restarted it faster than the zookeeper timeout so it appears to be re-registering."
-Harsha On Wed, Feb 18, 2015, at 03:16 PM, Deepak Dhakal wrote: > Hi, > > My name is Deepak and I work for salesforce. We are using kafka 8.11 and > have a question about starting kafka with same broker id. > > Steps: > > Start a kakfa broker with broker id =1 -> it starts fine with external ZK > Start another kafka with same broker id =1 .. it does not start the kafka > which is expected but I am seeing the following log and it keeps retrying > forever. > > Is there way to control how many time a broker tries to starts itself > with > the same broker id ? > > > Thanks > Deepak > > [2015-02-18 14:47:20,713] INFO conflict in /controller data: > {"version":1,"brokerid":19471,"timestamp":"1424299100135"} stored data: > {"version":1,"brokerid":19471,"timestamp":"1424288444314"} > (kafka.utils.ZkUtils$) > > [2015-02-18 14:47:20,716] INFO I wrote this conflicted ephemeral node > [{"version":1,"brokerid":19471,"timestamp":"1424299100135"}] at > /controller > a while back in a different session, hence I will backoff for this node > to > be deleted by Zookeeper and retry (kafka.utils.ZkUtils$) > > [2015-02-18 14:47:30,719] INFO conflict in /controller data: > {"version":1,"brokerid":19471,"timestamp":"1424299100135"} stored data: > {"version":1,"brokerid":19471,"timestamp":"1424288444314"} > (kafka.utils.ZkUtils$) > > [2015-02-18 14:47:30,722] INFO I wrote this conflicted ephemeral node > [{"version":1,"brokerid":19471,"timestamp":"1424299100135"}] at > /controller > a while back in a different session, hence I will backoff for this node > to > be deleted by Zookeeper and retry (kafka.utils.ZkUtils$)