As a cluster, each none in the cluster should know each other to function properly. For a Cassandra cluster(I don't know ActiveMQ's mechanism), as an example, it has its own protocal to communicate with each other to know their condition.
For Kafka, each node stays independantly, they use zookeeper to know the condition of the whole cluster. Each node communicates with zookeeper. On Wed, Sep 16, 2015 at 7:24 AM, Ashish Shenoy <ashe...@instartlogic.com> wrote: > Zookeeper is a distributed coordination service. Kafka uses Zookeeper for > various things like leader election, storing consumer-partition offsets > etc. > > More information on each service is available at > http://kafka.apache.org/documentation.html and > https://zookeeper.apache.org/ > I highly recommend reading them for more information. > > TLDR: > http://stackoverflow.com/questions/23751708/kafka-is-zookeeper-a-must > > Thanks, > Ashish > > On Tue, Sep 15, 2015 at 1:45 PM, Joe San <codeintheo...@gmail.com> wrote: > > > Hi Apache Kafka, > > > > I'm evaluating Apache Kafka for one of the projects that I'm into. I have > > used ActiveMQ in the past which makes using Kafka pretty straightforward. > > One thing that I do not understand is the need for Zookeeper? > > > > I understand what Zookeeper is, but I fail to understand what purpose it > > solves with Apache Kafka. Is it needed for the Apache Kafka cluster > > management? Could you please elaborate a bit on this? > > > > Regards, > > Joe > > >
