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https://issues.apache.org/jira/browse/CASSANDRA-1428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12913039#action_12913039
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Jonathan Ellis commented on CASSANDRA-1428:
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incidently, in r999469 I changed this from using live node count as N to using
total known cluster members as N.
> Rejecting keyspace creation when RF > N is incorrect
> ----------------------------------------------------
>
> Key: CASSANDRA-1428
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1428
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 0.7 beta 1
> Reporter: Cliff Moon
> Priority: Minor
> Fix For: 0.7.0
>
>
> The behavior introduced in this patch
> http://www.mail-archive.com/commits@cassandra.apache.org/msg05913.html 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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