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From mcasandra <mohitanch...@gmail.com>
Subject RE: Basic Cassandra Architecture questions
Date Fri, 11 Feb 2011 17:37:00 GMT

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?


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