Unless you're close to running out of disk space, what's the harm in it taking a while? How big is your DC? At 45 min per node, you can do 32 nodes a day. Diverting traffic away from a DC just to run cleanup feels like overkill to me.
On Thu, Oct 8, 2015 at 2:39 PM sai krishnam raju potturi < pskraj...@gmail.com> wrote: > hi; > our cassandra cluster currently uses DSE 4.6. The underlying cassandra > version is 2.0.14. > > We are planning on adding multiple nodes to one of our datacenters. This > requires "nodetool cleanup". The "nodetool cleanup" operation takes > around 45 mins for each node. > > Datastax documentation recommends running "nodetool cleanup" for one node > at a time. That would be really long, owing to the size of our > datacenter. > > If we were to divert the read and write traffic away from a particular > datacenter, could we run "cleanup" on multiple nodes in parallel for that > datacenter?? > > > http://docs.datastax.com/en/cassandra/2.0/cassandra/operations/ops_add_node_to_cluster_t.html > > > thanks > Sai >
