Re: Cassandra users survey

2009-11-24 Thread Ted Zlatanov
On Mon, 23 Nov 2009 23:30:51 -0500 Matt Revelle mreve...@gmail.com wrote: MR Are you both using timestamps as row keys? Would be great to hear MR more details. I'm using super column keys in a super column. So let's say your resource is routerA. Your data will be: Row routerA SuperColumn

Re: cassandra over hbase

2009-11-24 Thread Ted Zlatanov
On Mon, 23 Nov 2009 11:58:08 -0800 Jun Rao jun...@almaden.ibm.com wrote: JR After chatting with some Facebook guys, we realized that one potential JR benefit from using HDFS is that the recovery from losing partial data in a JR node is more efficient. Suppose that one lost a single disk at a

Re: Wish list [from users survey thread]

2009-11-24 Thread Ted Zlatanov
On Mon, 23 Nov 2009 13:45:09 -0600 Jonathan Ellis jbel...@gmail.com wrote: JE 1. Increment/decrement: atomic is a dirty word in a system JE emphasizing availability, but incr/decr can be provided in an JE eventually consistent manner with vector clocks. There are other JE possible approaches

Re: Wish list [from users survey thread]

2009-11-24 Thread Ian Holsman
well. I'd like to see how many times a specific user hits the site, without having to add them up every time. On Nov 24, 2009, at 9:47 AM, Ted Zlatanov wrote: On Mon, 23 Nov 2009 13:45:09 -0600 Jonathan Ellis jbel...@gmail.com wrote: JE 1. Increment/decrement: atomic is a dirty word in a

Re: Wish list [from users survey thread]

2009-11-24 Thread Jonathan Ellis
On Mon, Nov 23, 2009 at 1:45 PM, Jonathan Ellis jbel...@gmail.com wrote: 9. Design documentation: also agreed.  Chris has started on this (http://wiki.apache.org/cassandra/ArchitectureSSTable) and I will try to at least sketch out some more this week.

Re: ring state out of sync in build 883477

2009-11-24 Thread Jonathan Ellis
Looks like this is another symptom of https://issues.apache.org/jira/browse/CASSANDRA-150, which is on track to be fixed soon On Tue, Nov 24, 2009 at 11:19 AM, B. Todd Burruss bburr...@real.com wrote: they all were restarted at various times. for vmguest85 the other three are seed nodes. On

Re: Cassandra access control

2009-11-24 Thread Ted Zlatanov
Looks like I could use: PAM auth: http://jpam.sourceforge.net/ LDAP/AD auth: http://www.openldap.org/jldap/ The first is definitely OK (Apache license), but I'm not sure about the second one (OpenLDAP public license). Looks BSDish to me. It claims to support Windows auth and is officially

Re: Cassandra users survey

2009-11-24 Thread Rich Atkinson
We at Platform46 are building an on-premise enterprise appliance which provides twitter-like, open-follower, short messaging services for internal corporate networks. We are using Cassandra, Python and RabbitMQ to help us build a scalable solution where appliances may be configured as true peers

urgent: missing data!

2009-11-24 Thread kevin
hi guys i have been using cassandra this version Path: . URL: http://svn.apache.org/repos/asf/incubator/cassandra/trunk Repository Root: http://svn.apache.org/repos/asf Repository UUID: 13f79535-47bb-0310-9956-ffa450edef68 Revision: 831540 Node Kind: directory Schedule: normal Last Changed

Re: Cassandra users survey

2009-11-24 Thread matthew hawthorne
I work for Comcast, and we have tons of data that we are migrating into non-relational storage. we recently evaluated cassandra, riak, voldemort, and hdfs. I focused on cassandra, this is why you may have seen me asking dumb questions over IRC :-) A few desirables for cassandra: 1) I'm not a

Re: urgent: missing data!

2009-11-24 Thread kevin
On Tue, Nov 24, 2009 at 6:05 PM, kevin kevincastigli...@gmail.com wrote: hi guys i have been using cassandra this version Path: . URL: http://svn.apache.org/repos/asf/incubator/cassandra/trunk Repository Root: http://svn.apache.org/repos/asf Repository UUID: