[Cassandra Wiki] Update of "Operations" by StuHood

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The "Operations" page has been changed by StuHood.
http://wiki.apache.org/cassandra/Operations?action=diff&rev1=30&rev2=31

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  Cassandra is smart enough to transfer data from the nearest source node(s), if your !EndpointSnitch is configured correctly.  So, the new node doesn't need to be in the same datacenter as the primary replica for the Range it is bootstrapping into, as long as another replica is in the datacenter with the new one.
  
+ == Moving or Removing nodes ==
+ 
- == Removing nodes entirely ==
+ === Removing nodes entirely ===
  You can take a node out of the cluster with `nodetool decommission` to a live node, or `nodetool removetoken` (to any other machine) to remove a dead one.  This will assign the ranges the old node was responsible for to other nodes, and replicate the appropriate data there.
  
  No data is removed automatically from the node being decommissioned, so if you want to put the node back into service at a different token on the ring, it should be removed manually.