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Posted to dev@cassandra.apache.org by rektide <re...@voodoowarez.com> on 2012/07/25 23:52:37 UTC

Virtual nodes & order preserving partitioning

Hi all, forgive me if I've missed the discussion: what's the impact of virtual nodes on
those using order preserving partitioning & who need to do fast range-slice queries?

Regards, thanks.

Re: Virtual nodes & order preserving partitioning

Posted by Sam Overton <sa...@acunu.com>.

Hi,

On 25 July 2012 22:52, rektide <re...@voodoowarez.com> wrote:
> Hi all, forgive me if I've missed the discussion: what's the impact of virtual nodes on
> those using order preserving partitioning & who need to do fast range-slice queries?
>

The implementation currently in trunk allows you to specify tokens
manually in initial_token of the yaml. Assuming that you know your key
distribution you can manually select tokens which give you even load
distribution. Currently there is no support in trunk for moving
virtual nodes, but this is being worked on:
https://issues.apache.org/jira/browse/CASSANDRA-4445

-- 
Sam Overton
Acunu | http://www.acunu.com | @acunu