Thank you for your response Joel, > Can you file a jira for this?
I've created https://issues.apache.org/jira/browse/KAFKA-2225 > Out of curiosity - what's the typical latency (distribution) you see between zones? Unfortunately I don't have any good numbers on that. Since we're publishing both in the same AZ and to other AZs the latency metrics reflect both. If I figure out a good way to measure this I will report back. T# On Tue, May 26, 2015 at 10:44 PM, Joel Koshy <jjkosh...@gmail.com> wrote: > > Apologies if this question has been asked before. If I understand things > > correctly a client can only fetch from the leader of a partition, not > from > > an (in-sync) replica. I have a use case where it would be very beneficial > > if it were possible to fetch from a replica instead of just the leader, > and > > I wonder why it is not allowed? Are there any consistency problems with > > allowing it, for example? Is there any way to configure Kafka to allow > it? > > Yes this should be possible. I don't think there are any consistency > issues (barring any bugs) since we never expose past the > high-watermark and the follower HW is strictly <= leader HW. Can you > file a jira for this? > > > The use case is a Kafka cluster running in EC2 across three availability > > zones. > > Out of curiosity - what's the typical latency (distribution) you see > between zones? > > Joel >
