Or could we do a rapid clone to a new cluster, then add that as another datacenter?
On Wed, Feb 14, 2018 at 11:40 AM, Carl Mueller <carl.muel...@smartthings.com > wrote: > https://stackoverflow.com/questions/48776589/cassandra- > cant-one-use-snapshots-to-rapidly-scale-out-a-cluster/48778179#48778179 > > So the basic question is, if one records tokens and snapshots from an > existing node, via: > > nodetool ring | grep ip_address_of_node | awk '{print $NF ","}' | xargs > > > for the desired node IP > > then takes snapshots > > then transfers the snapshots to a new node (not yet attached to cluster) > > sets up initial_tokens in the yaml > > sets up schema to match > > then has it join the cluster > > Would that allow quick scaleup of nodes/replication of data? I don't care > if the vnode map changes after the initial join, or data starts being > streamed off as it rebalances, as the cluster > > Is there an issue if the vnodes tokens for two nodes are identical? Do > they have to be distinct for each node? > Is it that it mucks with the RF since there will be a greater RF than > normal? > Is this just not that practically faster than an sstable load? > > Basically, I was wondering if we just use this to double the number of > nodes with identical copies of the node data via snapshots, and then later > on cassandra can pare down which nodes own which data. > > >
