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From zhiming shen <zhiming.s...@gmail.com>
Subject Re: Will Cassandra balance load across replicas?
Date Thu, 05 Apr 2012 16:22:29 GMT
Thanks for your reply. My question is about the impact of replication on
load balancing. Say we have nodes ABCD... in the ring. ReplicationFactor is
3 so the data on A will also have replicas on B and C. If we are reading
data own by A, and A is already very busy, will the requests be forwarded
to B and C? How about update requests?


Thanks,


Zhiming

On Thu, Apr 5, 2012 at 12:33 AM, Watanabe Maki <watanabe.maki@gmail.com>wrote:

> I assume you are talking about nodes, rather than replicas.
> The data distribution over ring depends on Partitioner and Replica
> placement strategy you use.
> If you are using Random Partitioner and Simple Strategy, your data will be
> automatically distributed over the nodes in the ring.
>
> maki
>
>
> On 2012/04/05, at 12:31, zhiming shen <zhiming.shim@gmail.com> wrote:
>
> > Hi,
> >
> > Can any one tell me whether Cassandra can do load balancing across
> replicas? How to configure it for this purpose? Thanks very much.
> >
> >
> > Best Regards,
> >
> > Zhiming
>

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