The "easiest" (in quotes given the size of that cluster) approach is to add a new datacenter with shiny new nodes and configured for single token. Once the 'add' is complete, de-commission the old one. This approach of evacuating to a new DC is pretty safe. The only downside is the temporary 2x capacity cost.
On Fri, Sep 9, 2016 at 5:45 PM, Dikang Gu <dikan...@gmail.com> wrote: > Hi, > > We have some big cluster (500+ nodes), they have 256 vnodes on physical > host, which is causing a lot of problems to us, especially make the gossip > to be in-efficient. > > There seems no way to change the number of vnodes on existing nodes, is > there any reason that we can not support it? It should not be too different > from moving the node with one single token, right? > > Thanks > Dikang > -- ----------------- Nate McCall Wellington, NZ @zznate CTO Apache Cassandra Consulting http://www.thelastpickle.com
