Re: Replica Distribution

2010-06-03 Thread Alexander Sicular
Rebalancing was touched on recently here, http://lists.basho.com/pipermail/riak-users_lists.basho.com/2010-May/001282.html . On Jun 4, 2010, at 1:08 AM, Alan McConnell wrote: > My (very limited) understanding is that there is a "best effort" attempt to > distribute things wisely, but it is not

Re: Replica Distribution

2010-06-03 Thread Alexander Sicular
Wow. Jason, get out of my head. I was actually gonna go hunt through the code to find out how exactly the chash (circular hash) function works, how Riak knows it has N replicas and how does Riak decide where they get placed. For example, lets say there are three pnodes (physical nodes). Accordi

Re: Replica Distribution

2010-06-03 Thread Alan McConnell
* My (very limited) understanding is that there is a "best effort" attempt to distribute things wisely, but it is not guaranteed. So in the case you've specified, no it is not guaranteed that at least two of the three replicas will go to physically separate nodes. I see this in my cluster of 2 no

Replica Distribution

2010-06-03 Thread Jason J. W. Williams
Hello, I was reading the "So what does N=3 really mean?" section of https://wiki.basho.com/display/RIAK/Replication#Replication-ReadRepair ... The part where it states that 3 replicas will not necessarily go to 3 physically separate nodes very much surprised me. Is there any guarantee at least tw

Riakl Recap for 6/2

2010-06-03 Thread Mark Phillips
Afternoon, Morning, Evening to all Sadly, this will be my last day writing from Portland. I hardly knew you :( Anyways, for today's recap : some new functionality to a fork of riak.js and some knowledge from #riak. Enjoy and have a great weekend. Mark Community Manager Basho Technologies wiki.

Re: Some questions before moving from CouchDB to Riak on production

2010-06-03 Thread Dan Reverri
The free webinar today might help answer some of your questions: http://blog.basho.com/2010/05/26/free-webinar:-load-testing-riak---june-3...@-2pm-eastern/ On Thu, Jun 3, 2010 at 9:46 AM, Germain Maurice < germain.maur...@linkfluence.net> wrote: > Hi > > We've started to use CouchDB earlier thi

Some questions before moving from CouchDB to Riak on production

2010-06-03 Thread Germain Maurice
Hi We've started to use CouchDB earlier this year, and we go from disappointments to failures, only to switch back to disappointment again. We've been testing riak for a few weeks now, and we are pretty happy with the results. But before definitely switching to riak, we have some questions. We n

Re: I need distributed file system ?

2010-06-03 Thread Justin Sheehy
Hello, Antoni. Riak handles all the distribution for you, and generally expects to store its data to a local filesystem. You do not need or want any sort of underlying distributed filesystem in addition to Riak. Best, -Justin ___ riak-users mailing l

I need distributed file system ?

2010-06-03 Thread zhengwei
I know Riak is a Dynamo-inspired key/value store, but I still wonder if I can consider Riak as BigTable? If so, I need a distributed file system like google file system? In this page (https://wiki.basho.com/display/RIAK/An+Introduction+to+Riak), section of "Data Storage" mentioned that "Riak .wri