Re: Viability of running on EC2

2009-06-13 Thread Jonathan Ellis
https://issues.apache.org/jira/browse/CASSANDRA-208 is probably the issue you are referring to. It is fixed in trunk. Our goal is to run most workloads fine with 1GB of heap out of the box, which should be fine even on a small EC2 instance iirc. See http://wiki.apache.org/cassandra/MemtableThres

Re: Viability of running on EC2

2009-06-13 Thread Anthony Molinaro
And any problems with small memory boxes? I see some chatter on the cassandra development list about OOM errors. Are they more prevalent on smaller footprint boxes? Thanks again, -Anthony On Sat, Jun 13, 2009 at 11:33:21AM -0500, Jonathan Ellis wrote: > IMO the biggest downside to running on E

Re: Viability of running on EC2

2009-06-13 Thread Jonathan Ellis
IMO the biggest downside to running on EC2 is that IO is terrible. I haven't done benchmarks, but anecdotally disk performance in particular seems like an order of magnitude slower than you'd get on non-virtual disks. So that is worth investigating before assuming that the price/performance on EC

Viability of running on EC2

2009-06-13 Thread Anthony Molinaro
Hi, I was wondering what the viability of running cassandra on ec2 was. I believe that it currently runs on some pretty hefty hardware at facebook, so I'm wondering what the minimum hardware config is (in other words can I run it on a cluster of 2core 4GB machines)? Also, running on Amazon means