Re: Possible application

2011-02-10 Thread Rock, Paul
Well, you can make Cassandra work on a single box (or multiple instances on a single box if need be). My experimental/dev cluster that my team plays with to try things out is 6 nodes running on 6 rather small cloud VM's and it works fine. So I'd say yes, it work in the merely big scale. On Feb

CF Stats in 0.7beta3

2010-11-10 Thread Rock, Paul
Afternoon all - I'm playing with 0.7beta3 on some boxes I have here at the office and while checking out the stats from one of my tests I'm seeing Write Latency being reported as "0.009 ms". I haven't done any timing yet in my client, but is this really microsecond latency, or is there a mismatc

Re: Build an index to for join query

2010-09-16 Thread Rock, Paul
Alvin - assuming I understand what you're after correctly, why not make a CF Name_Address(name, address). Modifying the Cassandra methods to do the "join" you describe seems like overkill to me... -Paul On Sep 15, 2010, at 7:34 PM, Alvin UW wrote: Hello, I am going to build an index to join t

Re: linux flavor?

2010-08-24 Thread Rock, Paul
This isn't directly related to Cassandra, but we did a bunch of I/O and disk load testing about 2 years ago when we started migrating to a new MTA platform looking specifically at filesystem performance. We compared EXT2, EXT3, GFS2, XFS and EXT4 under RHEL5/CentOS5 on a commodity box using 6 in