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From Anand Somani <meatfor...@gmail.com>
Subject Re: Configuring multi DC cluster
Date Thu, 15 Sep 2011 18:50:37 GMT
You are right, good catch, thanks!

On Thu, Sep 15, 2011 at 8:28 AM, Konstantin Naryshkin
<konstantinn@a-bb.net>wrote:

> Wait, his nodes are going SC, SC, AT, AT. Shouldn't they go SC, AT, SC, AT?
> By which I mean that if he adds another node to the ring (or lowers the
> replication factor), he will have a node that is under-utilized. The rings
> in his data centers have the tokens:
> SC: 0, 1
> AT: 85070591730234615865843651857942052864,
> 85070591730234615865843651857942052865
>
> They should be:
> SC: 0, 85070591730234615865843651857942052864
> AT: 1, 85070591730234615865843651857942052865
>
> Or did I forget/misread something?
>
> ----- Original Message -----
> From: "aaron morton" <aaron@thelastpickle.com>
> To: user@cassandra.apache.org
> Sent: Tuesday, September 13, 2011 6:19:16 PM
> Subject: Re: Configuring multi DC cluster
>
> Looks good to me. Last time I checked the Partitioner did not take the DC
> into consideration https://issues.apache.org/jira/browse/CASSANDRA-3047
>
>
> Good luck.
>
>
>
>
>
>
>
> -----------------
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> http://www.thelastpickle.com
>
>
> On 14/09/2011, at 8:41 AM, Anand Somani wrote:
>
>
> Hi,
>
> Just trying to setup a cluster of 4 nodes for multiDC scenario - with 2
> nodes in each DC. This is all on the same box just for testing the
> configuration aspect. I have configured things as
>
>    • PropertyFile
>
>
>        • 127.0.0.4=SC:rack1 127.0.0.5=SC:rack2 127.0.0.6=AT:rack1
> 127.0.0.7=AT:rack2 # default for unknown nodes default=SC:rack1
>    •
> Setup initial tokens as - advised     • configured keyspace with SC:2, AT:2
>    • ring looks like
>
>
>        • Address Status State Load Owns Token
> 85070591730234615865843651857942052865 127.0.0.4 Up Normal 464.98 KB 50.00%
> 0 127.0.0.5 Up Normal 464.98 KB 0.00% 1 127.0.0.6 Up Normal 464.99 KB 50.00%
> 85070591730234615865843651857942052864 127.0.0.7 Up Normal 464.99 KB 0.00%
> 85070591730234615865843651857942052865
>
> Is that what I should expect the ring to look like? Is there anything else
> I should be testing/validating to make sure that things are configured
> correctly for NTS?
>
> Thanks
> Anand
>
>

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