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From Robert Coli <>
Subject Re: best practices on EC2 question
Date Fri, 17 May 2013 18:32:15 GMT
On Fri, May 17, 2013 at 11:13 AM, aaron morton <> wrote:
> Bootstrapping a new node into the cluster has a small impact on the existing
> nodes and the new nodes to have all the data they need when the finish the
> process.

Sorry for the pedantry, but bootstrapping from existing replicas
cannot guarantee that the new nodes have "all" the data they need when
they finish the process. There is a non-zero chance that the failed
node contained the single under-replicated copy of a given datum. In
practice if your RF is >=2, you are unlikely to experience this type
of data loss. But restore-a-backup-then-repair protects you against
this unlikely case.


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