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From Robert Edmonds <>
Subject Re: Why Cassandra is "space inefficient" compared to MySQL?
Date Tue, 25 May 2010 19:23:51 GMT
On 2010-05-25, Jonathan Ellis <> wrote:
> That's true.  But fundamentally Cassandra is expected to use more
> space than mysql for a few reasons; usually the biggest factor is that
> Cassandra has to write out each column name in each row, since column
> names are dynamic unlike in mysql where you declare the columns once
> for the whole table.

does this mean that using short column names (e.g., "f" instead of
"first_seen") will save space when storing billions of rows?

Robert Edmonds

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