Hi, I am using Cassandra 0.7.5 on Linux machines.
I am trying to backup data from a multi-node cluster (3 nodes) and restore it into a single node cluster that has a different name (for development testing). The multi-node cluster is backed up using clustertool global_snapshot, and then I copy the snapshot from a single node and replace the data directory in the single node. The multi-node cluster has a replication factor of 3, so I assume that restoring any node from the multi-node cluster will be the same. When started up this fails with a node name mismatch. I have tried removing all the Location* files in the data directory (as per http://wiki.apache.org/cassandra/FAQ#clustername_mismatch) but the single node then fails with an error message: org.apache.cassandra.config.ConfigurationException: Found system table files, but they couldn't be loaded. Did you change the partitioner? How do you change the name of a cluster? The FAQ instructions do not seem to work for me - are they still valid for 0.7.5? Is the backup / restore mechanism going to work, or is there a better/simpler to copy data from multi-node to single-node? Thanks, Ross
