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From "Cliff Moon (JIRA)" <>
Subject [jira] Created: (CASSANDRA-1428) Rejecting keyspace creation when RF > N is incorrect
Date Tue, 24 Aug 2010 23:30:16 GMT
Rejecting keyspace creation when RF > N is incorrect

                 Key: CASSANDRA-1428
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 0.7 beta 1
            Reporter: Cliff Moon
            Priority: Minor

The behavior introduced in this patch
is incorrect.

Disallowing keyspace creation when RF > N is semantically incorrect and makes both scaling
a cluster up and down more difficult than it should be.  This is compounded by the current
lack of any API methods to change the replication factor.  Most dynamo style systems allow
RF to be set > N for smaller clusters.  The cluster will behave as if RF = N until enough
nodes are added such that RF < N.

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