Currently, regular consumers can only fetch from the leader replica. Otherwise, they will get an error in response. We allow some special consumers to read from follower replicas, but this is really for testing.
Are you thinking of load balancing? Currently, we do load balancing across partitions. We assume that there are many partitions in a cluster and try to spread the leaders evenly among brokers. That way, even for a particular partition, all clients have to talk to a single broker, the overall workload is still balanced. Thanks, Jun On Wed, Nov 27, 2013 at 2:13 AM, Simon Cooper < simon.coo...@featurespace.co.uk> wrote: > Hi, > > I've been looking at the SimpleConsumer example, and that I've noticed > that it always reads from the leader, and reacts to leader changes by > reconnecting to the new leader. Is it possible to read from a replica in > ISR that's not the leader? If so, how does the consumer get notified the > replica it's reading from is no longer in ISR? > > Thanks, > SimonC >
