Not sure about your config, but I read somewhere (also a newbie) that if number of consumers is more than number of partitions on the topic, some will not get any messages. Search consumer parallelism.
On Fri, Apr 29, 2016 at 4:11 AM, Marko Bonaći <marko.bon...@sematext.com> wrote: > Yes, a partition can be accessed by only a single thread at a time, so that > second consumer of yours, since it's in the same group, has nothing to do. > If you add more partitions your consumers would help each other consume all > messages out of that topic (roughly 50% of messages each). > If you were to assign the second consumer with a different group, each > consumer would consume all messages (independently of one another). > > BTW, Kafka is not broadcasting anything, your consumers are pulling > messages out of Kafka :) > > Marko Bonaći > Monitoring | Alerting | Anomaly Detection | Centralized Log Management > Solr & Elasticsearch Support > Sematext <http://sematext.com/> | Contact > <http://sematext.com/about/contact.html> > > On Fri, Apr 29, 2016 at 12:18 PM, paresh <pare...@glam.com> wrote: > > > Hi Team, > > > > Can anybody help with issue I am facing with running multiple consumer > > instances on single topic having single partition? > > > > Kafka is broadcasting messages to all the consumers though all consumers > > are running in same group > > I am using kafka-php client lib to connect with kafka server and using > > socket connect (Encoder/Decoder) for connecting consumer and producer. > > > > Regards, > > Paresh Behede > > > -- Radha Krishna, Proddaturi 253-234-5657
