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From Aaron Morton <>
Subject Re: column family names
Date Mon, 30 Aug 2010 09:29:22 GMT
Moving to the user list.

The new restrictions were added as part of  CASSANDRA-1377 for 0.6.5 and 0.7, AFAIK it's to
ensure the file names created for the CFs can be correctly parsed. So it's probably not going
to change.

The names have to match the \w reg ex class, which includes the underscore character. 


On 30 Aug 2010, at 21:01, Terje Marthinussen <> wrote:

> Hi,
> Now that we can make columns families on the fly, it gets interesting to use
> column families more as part of the data model (can reduce diskspace quite a
> bit vs. super columns in some cases).
> However, currently, the column family name validator is pretty strict
> allowing only word characters and in some cases it is pretty darned nice to
> be able to put something like a "-" inbetweenallthewords.
> Any reason to be this strict or could it be loosened up a little bit?
> Terje

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