Use nodetool status with vnodes http://www.datastax.com/dev/blog/upgrading-an-existing-cluster-to-vnodes

The different load can be caused by rack affinity, are all the nodes in the same rack ? Another simple check is have you created some very big rows?
Cheers

-----------------
Aaron Morton
Freelance Cassandra Developer
New Zealand

@aaronmorton

On 6/02/2013, at 8:40 AM, Stephen.M.Thompson@wellsfargo.com wrote:

So I have three nodes in a ring in one data center.  My configuration has num_tokens: 256 set andinitial_token commented out.  When I look at the ring, it shows me all of the token ranges of course, and basically identical data for each range on each node.  Here is the Cliffs Notes version of what I see:
 
[root@Config3482VM2 apache-cassandra-1.2.0]# bin/nodetool ring
 
Datacenter: 28
==========
Replicas: 1
 
Address         Rack        Status State   Load            Owns                Token
                                                                               9187343239835811839
10.28.205.125   205         Up     Normal  2.85 GB         33.69%              -3026347817059713363
10.28.205.125   205         Up     Normal  2.85 GB         33.69%              -3026276684526453414
10.28.205.125   205         Up     Normal  2.85 GB         33.69%              -3026205551993193465
  (etc)
10.28.205.126   205         Up     Normal  1.15 GB         100.00%             -9187343239835811840
10.28.205.126   205         Up     Normal  1.15 GB         100.00%             -9151314442816847872
10.28.205.126   205         Up     Normal  1.15 GB         100.00%             -9115285645797883904
  (etc)
10.28.205.127   205         Up     Normal  69.13 KB        66.30%              -9223372036854775808
10.28.205.127   205         Up     Normal  69.13 KB        66.30%              36028797018963967
10.28.205.127   205         Up     Normal  69.13 KB        66.30%              72057594037927935
  (etc)
 
So at this point I have a number of questions.   The biggest question is of Load.  Why does the .125 node have 2.85 GB, .126 has 1.15 GB, and .127 has only 0.000069 GB?  These boxes are all comparable and all configured identically.
 
partitioner: org.apache.cassandra.dht.Murmur3Partitioner
 
Im sorry to ask so many questions Im having a hard time finding documentation that explains this stuff.
 
Stephen