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From Anthony John <chirayit...@gmail.com>
Subject Re: Basic Cassandra Architecture questions
Date Fri, 11 Feb 2011 17:43:12 GMT
>I am trying to think why R + W > N is said to be consistent and not R + W =
N?

E.g RF of 4  - Write goes to nodes 1/2 and - in R+W=N case - Reads could
happen from 3/4. Does your write could be missed!

HTH,

-JA

On Fri, Feb 11, 2011 at 11:37 AM, mcasandra <mohitanchlia@gmail.com> wrote:

>
> Is commit log file maintained on every node that's responsible to keep key
> ranges? So if Key A is supposed to go to Node, 1,2,3 then the commit log
> for
> Key A will be on each of these nodes? Is this commit log like redo log of
> oracle, which is used in case of failure to roll forward/back the writes?
>
> I am trying to think why R + W > N is said to be consistent and not R + W =
> N?
>
>
> --
> View this message in context:
> http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Basic-Cassandra-Architecture-questions-tp6014218p6016607.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at
> Nabble.com.
>

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