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The "Operations" page has been changed by SylvainLebresne.
http://wiki.apache.org/cassandra/Operations?action=diff&rev1=79&rev2=80

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  === Load balancing ===
  If you add nodes to your cluster your ring will be unbalanced and only way to 
get perfect balance is to compute new tokens for every node and assign them to 
each node manually by using nodetool move command.
  
- Here's a python program which can be used to calculate new tokens for the 
nodes. There's more info on the subject at Ben Black's presentation at 
Cassandra Summit 2010. 
http://www.riptano.com/blog/slides-and-videos-cassandra-summit-2010
+ Here's a python program which can be used to calculate new tokens for the 
nodes. There's more info on the subject at Ben Black's presentation at 
Cassandra Summit 2010. 
http://www.datastax.com/blog/slides-and-videos-cassandra-summit-2010
  
    def tokens(nodes):                        
        for x in xrange(nodes):         

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