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From Apache Wiki <wikidi...@apache.org>
Subject [Cassandra Wiki] Update of "FAQ" by BrandonWilliams
Date Thu, 28 Jul 2011 19:46:35 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Cassandra Wiki" for change notification.

The "FAQ" page has been changed by BrandonWilliams:
http://wiki.apache.org/cassandra/FAQ?action=diff&rev1=128&rev2=129

  <<Anchor(change_replication)>>
  
  == Can I change the ReplicationFactor on a live cluster? ==
- Yes, but it will require restarting and running repair manually to change the replica count
of existing data.
+ Yes, but it will require running repair to change the replica count of existing data.
  
+  * Alter the ReplicationFactor for the desired keyspace(s) using cassandra-cli.
-  * Alter the ReplicationFactor for the desired keyspace(s) in the storage configuration
on each node in the cluster.
-  * Restart cassandra on each node in the cluster.
  
  If you're reducing the ReplicationFactor:
  
@@ -258, +257 @@

  
  If you're increasing the ReplicationFactor:
  
-  * Run "nodetool repair" to run an anti-entropy repair on the cluster. Repair runs on a
per-node basis. This is an intensive process that will result in adverse cluster performance.
It's highly recommended to do rolling repairs, as an attempt to repair the entire cluster
at once will most likely swamp it and may even kill it.
+  * Run "nodetool repair" to run an anti-entropy repair on the cluster. Repair runs on a
per-replica set basis. This is an intensive process that may result in adverse cluster performance.
It's highly recommended to do rolling repairs, as an attempt to repair the entire cluster
at once will most likely swamp it.
  
  <<Anchor(large_file_and_blob_storage)>>
  

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