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From Robert Coli <>
Subject Re: Read Consistency
Date Tue, 30 Jun 2015 22:37:28 GMT
On Tue, Jun 30, 2015 at 11:16 AM, Tyler Hobbs <> wrote:

> Correct, if you get a WriteTimeout error, you don't know if any replicas
> have written the data or not.  It's even possible that all replicas wrote
> the data but didn't respond to the coordinator in time.  I suspect most
> users handle this situation by retrying the write with the same timestamp
> (which makes the operation idempotent*).

*Unless the operation is a counter increment/decrement, in which case it
cannot be idempotent.

This is why people who need very-accurate counters should probably not use
Cassandra for them. :)


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