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From Alain RODRIGUEZ <>
Subject Unreachable node, not in nodetool ring
Date Thu, 19 Jul 2012 08:38:40 GMT

I tried to add a node a few days ago and it failed. I finally made it
work with an other node but now when I describe cluster on cli I got
this :

Cluster Information:
   Snitch: org.apache.cassandra.locator.Ec2Snitch
   Partitioner: org.apache.cassandra.dht.RandomPartitioner
   Schema versions:
      e7e0ec6c-616e-32e7-ae29-40eae2b82ca8: [,]

And nodetool ring gives me :

Address         DC          Rack        Status State   Load
Owns                Token

                    85070591730234615865843651857942052864    eu-west     1b          Up     Normal  101.17 GB
50.00%              0    eu-west     1b          Up     Normal  55.27 GB
50.00%              85070591730234615865843651857942052864

The point, as you can see, is that one of my node has twice the
information of the second one. I have a RF = 2 defined.

My guess is that the token 0 node keep data for the unreachable node.

The IP of the unreachable node doesn't belong to me anymore, I have no
access to this ghost node.

Does someone know how to completely remove this ghost node from my cluster ?

Thank you.



On ubuntu (AMI Datastax 2.1 and 2.2)
Cassandra 1.1.2 (upgraded from 1.0.9)
2 node cluster (+ the ghost one)
RF = 2

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