Cassandra data model misconceptions, and their sources

2009-08-17 Thread Evan Weaver
Ok, here are the common Cassandra misconceptions, and their sources, gleaned from experience and talking to various people. Not listed in any particular order. 1. A key is global, and data in different column families must be related. - BigTable paper - key precedence in Thrift API 2. Table

Re: [VOTE] Release cassandra 0.4.0-beta1

2009-08-17 Thread Ian Holsman
+1 from me. On Aug 18, 2009, at 2:12 AM, ant elder wrote: On Mon, Aug 17, 2009 at 4:55 PM, Eric Evanseev...@rackspace.com wrote: On Mon, 2009-08-17 at 13:00 +0100, sebb wrote: Given whats being said in the Thrift release legal issues thread i think it should be ok to have the 3rd party

Re: Cassandra data model misconceptions, and their sources

2009-08-17 Thread Adam Rosien
I find the diagrams of Evan and folks (http://blog.evanweaver.com/files/cassandra/twitter.jpg) much easier to grok than any particular naming scheme. Annotating that diagram with specific implementations or constraints, like your wiki page, is a great addition. .. Adam On Mon, Aug 17, 2009 at

Re: Cassandra data model misconceptions, and their sources

2009-08-17 Thread Curt Micol
I've been thinking about this for a number of days, and again, while I am not a developer I thought I might toss in a proposal if that's okay. Since putting together a schema diagram and having a number of people review it, I think a change is warranted. Too many people are coming from the RDBMS