Multiple disks

Les Mikesell lesmikesell at gmail.com
Tue Mar 22 13:15:25 EDT 2011


On 3/22/2011 11:54 AM, Joseph Blomstedt wrote:
>
> Let's consider a simple scenario under normal riak. The key concept
> here is to realize that riak's vnodes are completely independent, and
> that failure and partition ownership changes are handled through
> handoff alone.
>
> Let's say we have an 8-partition ring with 3 riak nodes:
> n1 owns partitions 1,4,7
> n2 owns partitions 2,5,8
> n3 owns partitions 3,6
> ie: Ring = (0/n1, 1/n2, 2/n3, 3/n1, 4/n2, 5/n3, 6/n1, 7/n2, 8/n3)
>
> Each node runs an independent vnode for each partition it owns, and
> each vnode will setup it's own bitcask:

Do the redundant writes still go to different physical nodes or just 
vnodes that might be on the same host and fail at the same time?

-- 
   Les Mikesell
    lesmikesell at gmail.com




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