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From Taylor Gautier <tgaut...@tagged.com>
Subject Re: zookeeper cluster in WAN settings
Date Tue, 11 Oct 2011 17:07:05 GMT
That's my understanding - zookeeper is not tolerant of the high (and more
important, variable, as opposed to the local dc) latencies in a WAN
environment.

On Tue, Oct 11, 2011 at 9:46 AM, Jay Kreps <jay.kreps@gmail.com> wrote:

> In my understanding what is not recommended is having the zookeeper cluster
> itself split across datacenters. The reason for this is that writes round
> trip through all servers so that would add significantly to the write
> latency. I haven't seen an equivalent recommendation on not accessing zk as
> a client from another dc. As Jun says, it has worked well for us so far...
>
> -Jay
>
> On Tue, Oct 11, 2011 at 3:04 AM, Sharad Agarwal <sharad.apache@gmail.com
> >wrote:
>
> > I am trying to deploy kafka cluster in two data centers, one being the
> > mirror of another. I have read that Linked-in also does similar kind of
> > mirroring. I am not sure about the zookeeper cluster deployment. Having
> > zookeeper clients talking over WAN is not recommended. Do you use
> zookeeper
> > observers?
> >
> > Sharad
> >
>

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