Re: Looking for a Cassandra speaker for PgEast: 2011

2011-01-31 Thread Joshua D. Drake
On Mon, 2011-01-31 at 16:40 -0800, Joshua D. Drake wrote: > Hello, > > Why we can't run PostgreSQL (if technical) > How we run PostgreSQL and Oracle Obviously I meant Cassandra there. Sincerely, JD -- PostgreSQL.org Major Contributor Command Prompt, Inc: http://www.commandprompt.com/ - 509.4

Looking for a Cassandra speaker for PgEast: 2011

2011-01-31 Thread Joshua D. Drake
Hello, I am the organizer of PostgreSQL Conference. We are looking for a few Cassandra talks from qualified individuals. Topics such as, "What PostgreSQL could learn from Cassandra" would be great, especially if they are technical talks. Other topics such as: Why we can't run PostgreSQL (if tech

Re: Simple Compression Idea

2011-01-31 Thread Mike Malone
I don't see anything inherently wrong with your proposal, it would almost definitely be beneficial in certain scenarios. We use what could be called "static compression" (golomb-esque encodings) for some data types on our Cassandra clusters. It's useful for representing things like full precision d

Re: Simple Compression Idea

2011-01-31 Thread Terje Marthinussen
There is a lot of overhead in the serialized data itself (just have a look at a sstable file). It would be great to be able to compress at the byte array level rather than string. Regards, Terje On 1 Feb 2011, at 03:15, "David G. Boney" wrote: > In Cassandra, strings are stored as UTF-8. In

Re: Simple Compression Idea

2011-01-31 Thread David G. Boney
Is the partitioner the only code that does comparisons on the keys of a column family? What about get_range_slices(), does it only use the partitioner's comparison method? - Sincerely, David G. Boney dbon...@semanticartifacts.com http://www.semanticartifacts.com On Jan 31, 2011, a

Announcing Acunu

2011-01-31 Thread Richard Low
Hello, Just thought I'd drop everyone a quick line to let you know that Acunu are looking for some talented devs to work on Cassandra. Acunu are working on a storage platform for Big Data, including a modified version of Cassandra on top of a native in-kernel key-value store, with a bunch of depl

Re: Simple Compression Idea

2011-01-31 Thread David G. Boney
In Cassandra, strings are stored as UTF-8. In arithmetic coding compression, the modeling is separate from the coding. A standard arrangement is to have a 0-order model, frequencies of individual bytes, 1-order model, frequencies of two byte occurrences, and 2-order models, frequencies of three

Re: Bringing a node back online after failure

2011-01-31 Thread Robert Coli
On Sat, Jan 29, 2011 at 11:38 PM, Chris Goffinet wrote: > For nodes that might have a drive failure, but same ip address, what do you > think about supplying the node's same token + autobootstrap set to true? This > process works in trunk, but not all the data seems to be streamed over from >

Re: [VOTE] 0.7.1 (attempt #2)

2011-01-31 Thread Jonathan Ellis
Jira is still down, but I've committed Sylvain's fix on 0.7 branch. On Mon, Jan 31, 2011 at 9:18 AM, Jonathan Ellis wrote: > -1, CASSANDRA-1951 broke startup when propertyfilesnich is configured > > On Fri, Jan 28, 2011 at 2:32 PM, Eric Evans wrote: >> >> CASSANDRA-2058[1] has landed in 0.7, so

Re: [VOTE] 0.7.1 (attempt #2)

2011-01-31 Thread Jonathan Ellis
-1, CASSANDRA-1951 broke startup when propertyfilesnich is configured On Fri, Jan 28, 2011 at 2:32 PM, Eric Evans wrote: > > CASSANDRA-2058[1] has landed in 0.7, so let's give this another shot.  I > propose the following for release as 0.7.1. > > SVN: > https://svn.apache.org/repos/asf/cassandra

Re: Simple Compression Idea

2011-01-31 Thread Stephen Connolly
On 31 January 2011 04:41, David G. Boney wrote: > I propose a simple idea for compression using a compressed string datatype. > > The compressed string datatype could be implemented for column family keys by > creating a compressed string ordered partitioner. The compressed string > ordered part

Re: [VOTE] 0.7.1 (attempt #2)

2011-01-31 Thread Stephen Connolly
I've re-staged the main artifacts. The javautils stuff did not have any changes so I've left that staging repository as is from take #1 https://repository.apache.org/content/repositories/orgapachecassandra-015/ Description: apache cassandra 0.7.1 take #2 Details: The following artifacts have