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Subject: Re: LB scenario
From: aaron morton <aaron@thelastpickle.com>
In-Reply-To: <BANLkTi=aXwJfWoiS=+0u5K2K4XpC66FbtQ@mail.gmail.com>
Date: Thu, 7 Apr 2011 22:25:45 +1000
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To: user@cassandra.apache.org

I would look at your client and see if it can handle multiple pools. So =
it will try to connect in the first pool, if that fails retry the other =
nodes in that pool and then move to the next pool. I think hector has =
grabbed some of the performance detection features from the =
DynamicSnitch so may be a good place to start looking. =20

Hope that helps.
Aaron
=20
On 7 Apr 2011, at 03:26, A J wrote:

> I have done some more research. My question now is:
>=20
> 1. =46rom my tests I see that it matters a lot whether the =
co-ordinator
> node is local (geographically) to the client or not.
> I will have a cassandra cluster where nodes will be distributed across
> the globe. Say 3 in US east_cost, 3 in US west_coast and 3 in europe.
> Now, if I can help, I would like to have most of the traffic from my
> california clients being handled by the west_coast nodes. But incase
> the west_coast nodes are down or slow, the co-ordinator node can be
> elsewhere.
>=20
> What is the best strategy to give different weight to different nodes,
> where some nodes are preferred over the others.
>=20
>=20
> Thanks.
>=20
>=20
> On Tue, Apr 5, 2011 at 2:23 PM, Peter Schuller
> <peter.schuller@infidyne.com> wrote:
>>> Can someone comment on this ? Or is the question too vague ?
>>=20
>> Honestly yeah I couldn't figure out what you were asking ;) What
>> specifically about the diagram are you trying to convey?
>>=20
>> --
>> / Peter Schuller
>>=20