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From Jason Wee <peich...@gmail.com>
Subject Re: help on backup muiltinode cluster
Date Sat, 07 Dec 2013 09:09:20 GMT
Hmm... cassandra fundamental key features like fault tolerant, durable and
replication. Just out of curiousity, why would you want to do backup?

/Jason


On Sat, Dec 7, 2013 at 3:31 AM, Robert Coli <rcoli@eventbrite.com> wrote:

> On Fri, Dec 6, 2013 at 6:41 AM, Amalrik Maia <amalrik@s1mbi0se.com.br>wrote:
>
>> hey guys, I'm trying to take backups of a multi-node cassandra and save
>> them on S3.
>> My idea is simply doing ssh to each server and use nodetool to create the
>> snapshots then push then to S3.
>>
>
> https://github.com/synack/tablesnap
>
> So is this approach recommended? my concerns are about inconsistencies
>> that this approach can lead, since the snapshots are taken one by one and
>> not in parallel.
>> Should i worry about it or cassandra finds a way to deal with
>> inconsistencies when doing a restore?
>>
>
> The backup is as consistent as your cluster is at any given moment, which
> is "not necessarily". Manual repair brings you closer to consistency, but
> only on data present when the repair started.
>
> =Rob
>

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