Re: Effective allocation of multiple disks

2010-03-12 Thread Ryan King
would think software RAID 0 would be fine since there is no actual computation being done... Thanks! -Eric On Thu, Mar 11, 2010 at 1:16 PM, Ryan King r...@twitter.com wrote: Even without major compaction, you can get significant imbalances in how much data is on each disk which will bottleneck

Re: Effective allocation of multiple disks

2010-03-11 Thread Ryan King
On Thu, Mar 11, 2010 at 10:45 AM, Jonathan Ellis jbel...@gmail.com wrote: Except that for a major compaction the whole thing gets put in one directory.  That's the problem w/ the JBOD approach. Even without major compaction, you can get significant imbalances in how much data is on each disk

Re: Hackathon?!?

2010-03-09 Thread Ryan King
I'm already committed to talking about cassandra that day at our company's developer conference (chirp.twitter.com). -ryan On Tue, Mar 9, 2010 at 6:26 PM, Jeff Hodges jhod...@twitter.com wrote: I'm down. -- Jeff On Tue, Mar 9, 2010 at 6:18 PM, Jonathan Ellis jbel...@gmail.com wrote: I can

Re: finding Cassandra servers

2010-03-03 Thread Ryan King
2010/3/3 Ted Zlatanov t...@lifelogs.com: On Wed, 3 Mar 2010 09:04:37 -0800 Ryan King r...@twitter.com wrote: RK Something like RRDNS is no more complex that managing a list of seed nodes. How do your clients at Twitter find server nodes?  Do you just run them local to each node? RRDNS

Re: finding Cassandra servers

2010-03-03 Thread Ryan King
On Wed, Mar 3, 2010 at 9:27 AM, Eric Evans eev...@rackspace.com wrote: On Wed, 2010-03-03 at 16:49 +, Christopher Brind wrote: So is the current general practice to connect to a known node, e.g. by ip address? There are so many ways you could tackle this but... If you're talking about

Re: Hackathon?!?

2010-01-27 Thread Ryan King
I'd be interested in another hackathon and I'm sure we could help out in some way. An intro would be good, and I think we have a lot more people qualified to do so. -ryan On Wed, Jan 27, 2010 at 9:00 AM, Jonathan Ellis jbel...@gmail.com wrote: At the hackathon Twitter hosted last year, a lot

Re: Graduation

2010-01-08 Thread Ryan King
+1 from me, for sure. -ryan On Thu, Jan 7, 2010 at 10:56 AM, Eric Evans eev...@rackspace.com wrote: Greetings, It seems hard to believe, but it's been a little over a year now since Cassandra entered the Apache Incubator. The project has made an impressive amount of progress in that time,

Re: Images store in Cassandra

2009-12-12 Thread Ryan King
On Sat, Dec 12, 2009 at 12:05 PM, Ran Tavory ran...@gmail.com wrote: As we're designing our systems for a move from mysql to Cassandra we're considering moving our file storage to Cassandra as well. Is this wise? We're currently using mogilefs to store media items (images) of average size of

Re: Cassandra users survey

2009-11-20 Thread Ryan King
At twitter we're working on using Cassandra to replace our currents storage for all tweets. We have a cluster in production that's being populated outside the the user-critical path (ie, the cassandra writing is async). Additionally, we're testing and evaluating for basically everything else in

Re: [VOTE] Website

2009-11-11 Thread Ryan King
Looks great. +1 -ryan On Wed, Nov 11, 2009 at 2:22 PM, Johan Oskarsson jo...@oskarsson.nu wrote: +1. A great step forward from the current version and a good base to improve upon. /Johan Eric Evans wrote: The current website is quite ugly, and I don't know about you, but I'm itching to

Re: Visual representation of Cassandra data model

2009-08-12 Thread Ryan King
A few quick comments: * its not clear what column family the super column you're using is in. * it might be useful to include the timestamps in the columns (since they're user-supplied) * given that the colon-delimited api has been removed, it might be easier to explain the data model without