Re: Beginner Assumptions

2010-06-14 Thread Torsten Curdt
>> >> TBH while we are using super columns, the somehow feel wrong to me. I >> would be happier if we could move what we do with super columns into >> the row key space. But in our case that does not seem to be so easy. >> >> > > I'd be quite interested to learn what you are doing with super colu

Re: Beginner Assumptions

2010-06-13 Thread Benjamin Black
On Sun, Jun 13, 2010 at 3:08 PM, Mark Robson wrote: > > Range queries I think make them less useful, Not to my knowledge. > but only work if you're using > OrderPreservingPartitioner. The OPP comes with its own caveats - your nodes > are likely to become badly unbalanced, particularly if you use

Re: Beginner Assumptions

2010-06-13 Thread Mark Robson
On 13 June 2010 18:54, Benjamin Black wrote: > On Sun, Jun 13, 2010 at 12:53 AM, Torsten Curdt wrote: > > > > TBH while we are using super columns, the somehow feel wrong to me. I > > would be happier if we could move what we do with super columns into > > the row key space. But in our case tha

Re: Beginner Assumptions

2010-06-13 Thread Benjamin Black
On Sun, Jun 13, 2010 at 12:53 AM, Torsten Curdt wrote: > > TBH while we are using super columns, the somehow feel wrong to me. I > would be happier if we could move what we do with super columns into > the row key space. But in our case that does not seem to be so easy. > > I'd be quite interes

Re: Beginner Assumptions

2010-06-13 Thread Thomas Heller
Hey, I'm sorry, I think I didnt make myself clear enough. I'm using cassandra only the store the _results_ (the calculated time series) not the source data. Also using "Beginner Assumptions" as the Subject propably wasnt the best choice since I'm more interested in the in

Re: Beginner Assumptions

2010-06-13 Thread Paul Prescod
On Sun, Jun 13, 2010 at 12:53 AM, Torsten Curdt wrote: > > So you want to increment those counters per hit? I don't think there > is an atomic increment semantic in cassandra yet. (Some one else to > confirm?) > > True for Cassandra 0.6. Progress continued on it a week or so ago: * https://iss

Re: Beginner Assumptions

2010-06-13 Thread Torsten Curdt
> Anyways, I want to store some (alot of) Time Series data in Cassandra > and would like to check if my assumptions are correct so far. So if > someone with operational experience could confirm these I'd really > appreciate it. > > Basically the structure I'm going for right now looks like this: >

Beginner Assumptions

2010-06-12 Thread Thomas Heller
Hey, I've been planning to play arround with Cassandra for quite some time and finally got arround to it. I like what I've seen/used so far alot but my SQL-brain keeps popping up and trying to convince me that SQL is fine. Anyways, I want to store some (alot of) Time Series data in Cassandra and