Re: Start key must sort before (or equal to) finish key in your partitioner

On Mon, May 31, 2010 at 8:52 PM, Jonathan Ellis wrote: > OPP uses lexical ordering on the keys, which isn't going to be the > same as the natural order for a time-based uuid. *palmface*

Re: Ruby get_range with :reversed?

On Sat, May 29, 2010 at 11:55 PM, Jonathan Ellis wrote: > Cassandra supports slicing columns within a row in reversed order, but > not iterating rows in reverse. > Thanks Jonathan

Start key must sort before (or equal to) finish key in your partitioner

Hello! I am using an OrderPreservingPartitioner and sequential UUID's as keys. When I use get_range I frequently get an error indicating that my start key is not before or equal to my finish key, which seems impossible. The code to request slices looks like this: sometime = Time.now a = UUIDTools

Ruby get_range with :reversed?

I see the Ruby cassandra gem now supports :count for get_range, which means I can get the first of my slice of records when using OPP, but I can't get the last without get_range supporting a :reversed => true option. Does the underlying API support reversing a slice?

Terminology, getting slices by time

Hi! I am having trouble understanding the "column" terminology Cassandra uses. I am developing in Ruby. I need to store data for vehicles which will come in at different times and retrieve data for a specific vehicle for specific slices of time. So each record could look like: vehicle_id, { time