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From David Jeske <>
Subject Re: Not all data structures need timestamps (and don't require wasted memory).
Date Mon, 12 Sep 2011 16:45:04 GMT
On Sat, Sep 3, 2011 at 8:26 PM, Kevin Burton <> wrote:

> The point is that replication in Cassandra only needs timestamps to handle
> out of order writes … for values that are idempotent, this isn't necessary.
>  The order doesn't matter.

I believe this is a mis-understanding of how idempotency applies to
Cassandra replication. If there were no timestamps stored, how would
read-repair work? There would be two different values with no way to tell
which was written second.

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