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From aaron morton <>
Subject Re: are CFs consistent after a repair
Date Fri, 08 Feb 2013 02:25:44 GMT
>  'nodetool -pr repair' 
Assuming nodetool repair -pr

If there is no write activity all reads (at any CL level) will return the same value after
a successful repair. 

If there is write activity there is always a possibility of inconsistencies, and so only access
where R + W >N (e.g. QUORUM + QUROUM ) will be consistent. 

Can you drill down into the consistency problem?

Aaron Morton
Freelance Cassandra Developer
New Zealand


On 8/02/2013, at 7:01 AM, Brian Jeltema <> wrote:

> I'm confused about consistency. I have a 6-node group (RF=3) and I have a table that
> was known to be inconsistent across replicas (a Hadoop app was sensitive to this).
> So a did a 'nodetool -pr repair' on every node in the cluster. After the repairs were
> complete, the Hadoop app still indicated inconsistencies. Is this to be expected?
> Brian

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