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From "Hiller, Dean" <Dean.Hil...@nrel.gov>
Subject Re: compression
Date Sun, 23 Sep 2012 18:21:39 GMT
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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