Re: big cache vs. many partitions and replicas placement

2013-01-29 Thread Simon Effenberg
Hi Christian, thanks a lot. Yes I talked about eLevelDB (forgot to write it into the mail). This helps me a lot. I already thought to use 256 as ringsize but wasn't 100% sure. Cheers, Simon On Mon, 28 Jan 2013 17:23:56 + Christian Dahlqvist wrote: > Hi Simon, > > By cache size, I am assum

Re: about hash calculation in reference page at docs.basho.com

2013-01-29 Thread Donald Yan
Hi Charlie, That really helps to clear the confusion. Thanks again! Then it comes to the next question :-) Just curious to know: is there a special reason why using the end value as the partition's name? Normally, most people I think would pick the beginning value as the partition's name in co

Java client 2i question...

2013-01-29 Thread Guido Medina
Hi, On our presentation of how Temetra uses Riak on Dublin, we were told there was a special index which can list me the keys on a bucket using a 2i search, if so, does anyone has any code sample using the Java client to do that? Something like $[bucket _name] index? If so, is there any dang

Re: about hash calculation in reference page at docs.basho.com

2013-01-29 Thread Charlie Voiselle
Donald: Since the list of partitions can easily be segmented using a filter on partition values that are greater than the hashed value, it makes for a simple determination of the ordered preflist. For Example: Hash = 1045375627425331784151332358177649483819648417632 Parition

Using Riak for time-series data

2013-01-29 Thread Boris Solovyov
Is Riak good for time-series data like stock trade information? Data I consider is: - Millions, maybe billions or more of series, each has name, like stock ticker symbol - One-per-second measurement (occasionally will have missing values, rarely) - Many measurement are zero or stati

Re: Using Riak for time-series data

2013-01-29 Thread Alexander Sicular
Size wise, riak can handle. Leveldb will compress natively. Search (particularly non composite queries) and materialized keys will help you access your data. The main concern as you eluded to would be merging multiple sets. Riak doesn't like to do that. You would have to bring two sets into appl

Re: Using Riak for time-series data

2013-01-29 Thread Sean Cribbs
Hi Boris, A number of Basho customers and open-source users of Riak have done time-series type of data. The main strategy/solution is to "timebox" data into chunks based on a time window and possibly some other dimension. For an example, see http://boundary.com/blog/2012/08/21/boundary-techtalk-la

Re: Install from source

2013-01-29 Thread alaka
Hi , Even I am facing the same issue when I try to install riak through source. The error being: fatal: Not a git repository (or any of the parent directories): .git ./rebar get-deps /usr/bin/env: escript: No such file or directory. Can anybody have solution for this -- View this message in con

Leveldb backup using nodejs

2013-01-29 Thread vvsanil
We want to use basic 3 node riak cluster on amazon ec2 with a leveldb backend. The 3 nodes will be sitting under a load balancer. When doing a backup ... 1. Do i need to remove the node from the load balancer? 2. How do i backup riak using nodejs? Can i run a cron or do i have to do this manua