Re: Cassandra Agent

2013-10-11 Thread David Schairer
http://en.wikipedia.org/wiki/List_of_children_of_Priam You've got plenty of children of Priam to go around. Doesn't anyone read the Iliad any more? :) --DRS On Oct 11, 2013, at 6:55 AM, Edward Capriolo edlinuxg...@gmail.com wrote: Stick sandra on the end. Restsandra. On Friday, October

Re: Which of these VPS configurations would perform better for Cassandra ?

2013-08-04 Thread David Schairer
ocean's good reputation in the community. On Sun, Aug 4, 2013 at 12:53 AM, David Schairer dschai...@humbaba.net wrote: I've run several lab configurations on linodes; I wouldn't run cassandra on any shared virtual platform for large-scale production, just because your IO performance

Re: Which of these VPS configurations would perform better for Cassandra ?

2013-08-03 Thread David Schairer
I've run several lab configurations on linodes; I wouldn't run cassandra on any shared virtual platform for large-scale production, just because your IO performance is going to be really hard to predict. Lots of people do, though -- depends on your cassandra loads and how consistent you need

Re: Cassandra with SAN

2013-02-21 Thread David Schairer
Who breaks a butterfly upon a wheel? It will work, but you'd have a distributed database running on a single point of failure storage fabric, thus destroying much of your benefits, unless you have enough discrete SAN units that you treat them as racks in your cassandra topology to ensure that

Re: Java high-level client

2012-11-28 Thread David Schairer
Well, not really. Astyanax ('astu-wanax' in mycenaean greek, 'lord of the city') has his brains dashed out against the walls of troy by Neoptolemus, son of Achilles. So the suck was universal. --DRS, possibly the only trained classicist using big cassandra databases :) On Nov 28, 2012, at

Re: Cassandra multi DC

2012-03-29 Thread David Schairer
We built multi-DC right from the start -- two equal locations about 1000 miles apart but on the same provider backbone so there was reasonably robust and consistent connectivity between them. We did this using software ipsec to set up tunnels between the private networks in each location, but

Re: Multiple data center nodetool ring output display 0% owns

2012-02-12 Thread David Schairer
There was a thread on this a couple days ago -- short answer, the 'owns %' column is effectively incorrect when you're using multiple DCs. If you had all 3 servers in 1 DC, since server YYY has token 1 and server XXX has token 0, then server XXX would truly 'own' 0% (actually, 1/(2^128) :) ),

Re: Nodetool ring and multiple dc

2012-02-09 Thread David Schairer
nodetool ring is, IMHO, quite confusing in the case of multiple datacenters. Might be easier to think of it as two rings: in your DC1 ring you have two nodes, and since the tokens are balanced, assuming your rows are randomly distributed you'll have half the data on each, since your