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From Eric Stevens <migh...@gmail.com>
Subject Re: [Cassandra] Replacing a cassandra node
Date Fri, 21 Jun 2013 12:25:54 GMT
Is there a way to replace a failed server using vnodes?  I only had
occasion to do this once, on a relatively small cluster.  At the time I
just needed to get the new server online and wasn't concerned about the
performance implications, so I just removed the failed server from the
cluster and bootstrapped a new one.  Of course that caused a bunch of key
reassignments, so I'm sure it would be less work for the cluster if I could
bring a new server online with the same vnodes as the failed server.


On Thu, Jun 20, 2013 at 2:40 PM, Robert Coli <rcoli@eventbrite.com> wrote:

> On Thu, Jun 20, 2013 at 10:40 AM, Emalayan Vairavanathan
> <svemalayan@yahoo.com> wrote:
> > In the case where replace a cassandra node (call it node A) with another
> one
> > that has the exact same IP (ie. during a node failure), what exactly
> should
> > we do?  Currently I understand that we should at least run "nodetool
> > repair".
>
> If you lost the data from the node, then what you want is "replace_token."
>
> If you didn't lose the data from the node (and can tolerate stale
> reads until the repair completes) you want to start the node with
> auto_bootstrap set to false and then repair.
>
> =Rob
>

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