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From Tamar Fraenkel <ta...@tok-media.com>
Subject Re: compression
Date Mon, 24 Sep 2012 06:37:18 GMT
Thanks all, that helps. Will start with one - two CFs and let you know the
effect

*Tamar Fraenkel *
Senior Software Engineer, TOK Media

[image: Inline image 1]

tamar@tok-media.com
Tel:   +972 2 6409736
Mob:  +972 54 8356490
Fax:   +972 2 5612956





On Sun, Sep 23, 2012 at 8:21 PM, Hiller, Dean <Dean.Hiller@nrel.gov> wrote:

> As well as your unlimited column names may all have the same prefix,
> right? Like "accounts".rowkey56, "accounts".rowkey78, etc. etc.  so the
> "accounts gets a ton of compression then.
>
> Later,
> Dean
>
> From: Tyler Hobbs <tyler@datastax.com<mailto:tyler@datastax.com>>
> Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <
> user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
> Date: Sunday, September 23, 2012 11:46 AM
> To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <
> user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
> Subject: Re: compression
>
>  column metadata, you're still likely to get a reasonable amount of
> compression.  This is especially true if there is some amount of repetition
> in the column names, values, or TTLs in wide rows.  Compression will almost
> always be beneficial unless you're already somehow CPU bound or are using
> large column values that are high in entropy, such as pre-compressed or
> encrypted data.
>

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