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From Masood Mortazavi <masoodmortaz...@gmail.com>
Subject Re: A configuration and step-by-step procedure for production deployment ...
Date Thu, 25 Feb 2010 07:21:43 GMT
On Wed, Feb 24, 2010 at 8:29 PM, Jonathan Ellis <jbellis@gmail.com> wrote:

> On Wed, Feb 24, 2010 at 9:29 PM, Masood Mortazavi
> <masoodmortazavi@gmail.com> wrote:
> > Is there a configuration and step-by-step *procedure* for production
> > deployments of Cassandra?
>
> Not really.  As w/ any cluster deployment, some basic sysadmin kung fu
> is required, and we don't go into that (although I suppose maybe we
> should).
>
> For the Cassandra side you should read
>
> http://wiki.apache.org/cassandra/CassandraHardware
> http://wiki.apache.org/cassandra/Operations
>
> > By the way, I've noticed that not all potentially configurable setting
> may
> > actually be included in the -- storage-config.xml -- that's distributed
> with
> > the releases.
>
> I think we've exposed all the useful ones now. :)
>
> > [For example, there seems to be some default setting for R
> > (number of necessary reads, in the W+R ? N formula a la Dynamo paper),
> and
> > it is not clear to me how to over-rie it in config.xml.]
>
> If there is, it's dead code.  R and W in the Dynamo paper become
> ConsistencyLevel in thrift requests.
> (http://wiki.apache.org/cassandra/API)
>
>
I realize that ConsistencyLevel has replaced R and W.
However, is there a way to set this in the storage-config.xml?
Shouldn't it be possible to set it there?

- m.

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