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Date: Thu, 30 Sep 2010 09:29:27 -0700
Message-ID: <AANLkTimu8e-_GGATAZaBXbuz85SeR6MNDHtKpYmwWGOJ@mail.gmail.com>
Subject: Re: [DISCUSSION] High-volume counters in Cassandra
From: Ryan King <ryan@twitter.com>
To: dev@cassandra.apache.org
Content-Type: text/plain; charset=ISO-8859-1

On Tue, Sep 28, 2010 at 10:14 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
> On Tue, Sep 28, 2010 at 4:00 PM, Sylvain Lebresne <sylvain@yakaz.com> wrote:
>> I agree that it is worth adding a support for counter as supercolumns
>> in 1546 and that's fairly trivial, so I will add that as soon as possible
>> (but please understand that I'm working on this for a good part during
>> my free time).
>>
>> As for supercolumns of counters, there is what Jonathan proposes, but
>> I'll add that encoding a supercolumns CF to a standard column CF is
>> almost always a fairly trivial encoding. Worst case scenario it requires
>> you to roll up your own comparator and it's slightly less convenient
>> for client code.
>
> Supporting supercolumns to allow multiple counters per row, but
> requiring encoding with a custom comparator for deeper nesting, seems
> like a reasonable compromise to me.

I don't understand how this would work.

-ryan