Hi Jason, Both Kafka and Zookeeper are IO intensive systems. Zookeeper uses synchronous writes (there is some batching involved), so it is highly advised that zookeeper be deployed on dedicated disks. We have shared our production zookeeper experience here - https://cwiki.apache.org/confluence/display/KAFKA/Operations#Operations-Zookeeper
Zookeeper keeps all its data in memory and Kafka's sequential access pattern also takes advantage of the page cache. So, I would think the caching patterns might interfere with each other. Al though, we have never co-located Kafka and Zookeeper on the same hardware, I would steer away from it due to the operational overhead involved. Thanks, Neha On Thu, Oct 11, 2012 at 9:33 AM, Jason Rosenberg <j...@squareup.com> wrote: > Hi, > > I'm wondering whether it's common and/or advisable to co-locate zookeeper > and kafka instances on shared hardware? > > Thanks, > > Jason
