There must be someone or something that triggered nodetool loadbalance or nodetool move

Le 1 juin 2012 23:18, "Tyler Hobbs" <> a écrit :
OpsCenter just periodically calls describe_ring() on different nodes in the cluster, so that's how it's getting that information.

Maybe try running nodetool ring on each node in your cluster to make sure they all have the same view of the ring?

On Fri, Jun 1, 2012 at 4:01 PM, Curt Allred <> wrote:

We have a 10 node cluster (v0.7.9) split into 2 datacenters.  Three times we have seen nodes move themselves to different locations in the ring.  In each case, the move unbalanced the ring. In one case a node moved to the opposite side of the ring.


Sometime after the first spontaneous move we started using Datastax OpsCenter.  The next 2 moves showed up in its event log like:

5/20/2012 11:23am - Info -  Host moved from '12345' to '54321'


where '12345' and '54321' are the old and new tokens.


Anyone know whats causing this?


Tyler Hobbs