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From Mark Reddy <mark.re...@boxever.com>
Subject Re: Make an existing cluster multi data-center compatible.
Date Tue, 05 Aug 2014 10:56:07 GMT
Yes, you must run a full repair for the reasons stated in the yaml file.


Mark


On Tue, Aug 5, 2014 at 11:52 AM, Rene Kochen <rene.kochen@schange.com>
wrote:

> Hi all,
>
> I want to add a data-center to an existing single data-center cluster.
> First I have to make the existing cluster multi data-center compatible.
>
> The existing cluster is a 12 node cluster with:
> - Replication factor = 3
> - Placement strategy = SimpleStrategy
> - Endpoint snitch = SimpleSnitch
>
> If I change the following:
> - Placement strategy = NetworkTopologyStrategy
> - Endpoint snitch = PropertyFileSnitch -> all 12 nodes in this file belong
> to the same data-center and rack.
>
> Do I have to run full repairs after this change? Because the yaml file
> states: IF YOU CHANGE THE SNITCH AFTER DATA IS INSERTED INTO THE CLUSTER,
> YOU MUST RUN A FULL REPAIR, SINCE THE SNITCH AFFECTS WHERE REPLICAS ARE
> PLACED.
>
> Thanks!
>
> Rene
>
>
>

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