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From Rob Coli <>
Subject Re: nodetool repair - when is it not needed ?
Date Wed, 22 Aug 2012 18:59:15 GMT
On Wed, Aug 22, 2012 at 8:37 AM, Senthilvel Rangaswamy
<> wrote:
> We are running Cassandra 1.1.2 on EC2. Our database is primarily all
> counters and we don't do any
> deletes.
> Does nodetool repair do anything for such a database. All the docs I read
> for nodetool repair suggests
> that nodetool repair is needed only if there is deletes.

Since 1.0, repair is only needed if a node crashes. If a node crashes,
my understanding is that a cluster-wide repair (with -pr on each node)
is required, because the crashed node could have lost a hint for any
other node.


=Robert Coli
YAHOO - rcoli.palominob
SKYPE - rcoli_palominodb

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