background http://wiki.apache.org/cassandra/Operations#Replication
Try: * Assuming you are on CL one now, there should be little impact. * to reduce impact set read repair chance on the CF's to 0 * check the stream throughput and compaction throughput in yaml, assume you have * increase the RF * run repair -pr on one node at a time. * set read repair chance to 0.1 or keep it disabled if you want to * change your CL Hope that helps. ----------------- Aaron Morton Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 20/07/2013, at 8:34 PM, Chris Wirt <chris.w...@struq.com> wrote: > Hi, > > I want to increase the replication level in one of our datacenters from 1 to > 2. This DC is live, so thought I'd do the right thing and email users, > instead of cowboying it. > > It is a small DC with just 3 nodes, tonnes of space and quite strict latency > requirements. We are running 1.2.4 with vnodes and whole load of tweaks to > make reads as fast as possible. > > What is the recommended procedure to achieve this with minimal affect on > performance? > and > What is the recommended procedure to achieve this as quickly as possible? > > > Thanks, > Chris
