Re: multi region EC2

2012-04-02 Thread Rob Coli
On Mon, Mar 26, 2012 at 3:31 PM, Deno Vichas > but what if i already have a bunch (8g per node) data that i need and i > don't have a way to re-create it. Note that the below may have unintended consequences if using Counter column families. It actually can be done with the cluster running, below

Re: multi region EC2

2012-03-31 Thread Janne Jalkanen
I've switched from SS to NTS on 1.0.x on a single-az cluster with RF3 (which obviously created a single-dc, single-rack NTS cluster). Worked without a hitch. Also switched from SimpleSnitch to Ec2Snitch on-the-fly. I had about 12GB of data per node. Of course, your mileage may vary, so while I

Re: multi region EC2

2012-03-31 Thread aaron morton
I'm kind of guessing here because it's not something I've done before. Obviously test things first… The NTS with a single DC and a single Rack will place data in the same location as the Simple Strategy. You *should* be able to change the replication strategy from, say, SS with RF 3 to NTS with

Re: multi region EC2

2012-03-26 Thread Deno Vichas
On 3/26/2012 2:15 PM, aaron morton wrote: - can i migrate the replication strategy one node at a time or do i need to shut to the whole cluster to do this? Just use the NTS from the start. but what if i already have a bunch (8g per node) data that i need and i don't have a way to re-create it.

Re: multi region EC2

2012-03-26 Thread aaron morton
> (rep factor 3, simple) if this means you are using the SimpleStrategy I would recommend using the NetworkTopologyStrategy. > - what is the min and recommended number of nodes to use in multiple region > cluster. we only have a single app server right now. It depends on how exciting you want

multi region EC2

2012-03-26 Thread Deno Vichas
all, we just about ready to push our app live and just have some cassandra tuning left. i've been currently running a 4 node (rep factor 3, simple) in EC2 using the datastax AMIs (thanks datastax). so after reading through a bunch of docs i have a few questions. - what is the min and reco