Hi,
This is my first post, so first of all - thanks to Cassandra authors and
community for their excellent job!
Now to my question... I need a plan for transition from SimpleStrategy
to NetworkSopologyStrategy (as I have to add two servers from remote
datacenter with RTT up to 120ms to my cluster).
Cluster consists from 10 nodes in 5 datacenters (2 node per DC), each
node carry about 4G of data in keyspace
Keyspace: meter:
Replication Strategy: org.apache.cassandra.locator.SimpleStrategy
Durable Writes: true
Options: [replication_factor:3]
Originally I planned (and tested) simply rolling restart nodes with
NetworkTopologyStategy enabled in cassandra.yaml (and proper
cassandra-topology.properties file in place) and after nodes restarted -
update my keyspace with option {DC1:1,DC2:1,...}. But my concern is -
will cassandra begin to move data location right after restart with
enabled NTS (and should I wait for it during rolling restart?) or only
after keyspace update with new options?
Or there is some other way?
Thanks!
