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From Robert Coli <>
Subject Re: Counter value becomes incorrect after several dozen reads & writes
Date Tue, 25 Jun 2013 18:18:24 GMT
On Mon, Jun 24, 2013 at 6:42 PM, Josh Dzielak <> wrote:
> There is only 1 thread running this sequence, and consistency levels are set
> to ALL. The behavior is fairly repeatable - the unexpectation mutation will
> happen at least 10% of the time I run this program, but at different points.
> When it does not go awry, I can run this loop many thousands of times and
> keep the counter exact. But if it starts happening to a specific counter,
> the counter will never "recover" and will continue to maintain it's
> incorrect value even after successful subsequent writes.

Sounds like a corrupt counter shard. Hard to understand how it can
happen at ALL. If I were you I would file a JIRA including your repro


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