Re: Create a smaller cluster based on snapshost

2015-06-23 Thread Robert Coli
On Sun, Jun 21, 2015 at 8:25 PM, John Wong wrote: > In the case of restoring from snapshots I have restored a 6-node replica > with just copying snapshot files (along with schema files), run nodetool > refresh, and should be able to complete in a few hours. But now with > smaller replica, do I ag

Re: Create a smaller cluster based on snapshost

2015-06-22 Thread Vitalii Skakun
Hi, I'm aware of at least 2 ways: 1. create 6 node cluster, restore snapshot to it from original cluster; and reduce this second cluster to 3 nodes. in this case, you should be careful in picking nodes to be decommissioned to avoid additional rebalance of cluster and changing tokens. 2. prepare t

Create a smaller cluster based on snapshost

2015-06-21 Thread John Wong
Hi. Supposed I have a 6-node cluster running and I want to build a 3-node cluster based on that 6-node cluster. What is the recommended way to quickly build such cluster? Each node is about 120Gb and we have RF=3. We are on Cassandra 1.2.19 and we are not using vnode. My initial research shows it