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From SEGALIS Morgan <>
Subject Re: Does nodetool repair stop the node to answer requests ?
Date Thu, 22 Jan 2015 18:56:51 GMT
If I change the network topology, I have to run repair right before adding
a new cluster ?

I know that I should put 2 more nodes, so far, I'm preparing myself to
create a new node on a new DC, but on same network (ping really low), so at
least I would have a backup server if anything happens, just need to wrap
my head around the network topology and understand what I do before
starting a new node.

2015-01-22 19:15 GMT+01:00 Flavien Charlon <>:

> I don't think you can do nodetool repair on a single node cluster.
> Still, one day or another you'll have to reboot your server, at which
> point your cluster will be down. If you want high availability, you should
> use a 3 nodes cluster with RF = 3.
> On 22 January 2015 at 18:10, Robert Coli <> wrote:
>> On Thu, Jan 22, 2015 at 9:36 AM, SEGALIS Morgan <>
>> wrote:
>>> So I wondered, does a nodetool repair make the server stop serving
>>> requests, or does it just use a lot of ressources but still serves request ?
>> In pathological cases, repair can cause a node to seriously degrade. If
>> you are operating correctly, it just uses lots of resources but still
>> serves requests.
>> =Rob


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