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From Patrick Hunt <ph...@apache.org>
Subject Re: Optimal ZooKeeper configuration for a cluster of size, N
Date Sat, 06 Oct 2012 14:28:54 GMT
The defaults should be fine for what you described. The initLimit
would need to be increased if the data being stored is very large, the
syncLimit increased if you were running across say a wan link (btw
servers) and leaderServes is only really useful if you have a large
number of writes/clients and you want the leader to focus on
coordination (rather than that plus serving client requests.)


On Thu, Oct 4, 2012 at 2:41 AM,  <mallikharjun.vemana@thomsonreuters.com> wrote:
> We are using ZooKeeper 3.4.4 for our deployment. I would like to know what would be optimum
config setting for various configuration parameter viz., initLimit, syncLimit, leaderServes,
etc. As of now we are using default parameters for these parameters. But, I would like to
understand how each one of them depend on the size of the zookeeper cluster.
> Say I have N servers in the cluster, I would like to know how each of these values can
be configured (in terms of N) for optimum results. Also, I would like to understand how session
timeout would effect the performance of the cluster.
> In our deployment,
> - we are basically using the zookeeper service to detect failures in our system.
> - we are storing very minimal data in the cluster.
> - we are planning to have 3 or 5 servers in the cluster.
> Can anyone please throw some light on these config settings? I did go through the admin
guide. But, I would like to understand each one of them from the perspective of zookeeper
cluster size. Please help.
> Thanks,
> Arjun.

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