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The "FAQ" page has been changed by NickTelford. http://wiki.apache.org/cassandra/FAQ?action=diff&rev1=42&rev2=43 -------------------------------------------------- == Can I change the ReplicationFactor on a live cluster? == Yes, but it will require a little work. - 1. Alter the ReplicationFactor for the desired keyspace(s) in the storage configuration on each node in the cluster. + * Alter the ReplicationFactor for the desired keyspace(s) in the storage configuration on each node in the cluster. - 2. Restart cassandra on each node in the cluster + * Restart cassandra on each node in the cluster If you're reducing the ReplicationFactor: - 3. Run "nodetool cleanup" on the cluster to remove surplus replicated data. + * Run "nodetool cleanup" on the cluster to remove surplus replicated data. If you're increasing the ReplicationFactor: - 3. Run "nodetool repair" to run an anti-entropy repair on the cluster. This is an intensive process so may result in adverse cluster performance or even down-time while it runs. + * Run "nodetool repair" to run an anti-entropy repair on the cluster. This is an intensive process so may result in adverse cluster performance or even down-time while it runs.
