Re: VNodes, Replication and Minimum cluster size

2013-01-10 Thread Alain RODRIGUEZ
"The key advantage of vnodes in this case is that you do not need to manually rebalance the cluster when adding or removing nodes." Well, I thing that a bigger "key advantage" of vnodes would rather be the performance improvement due to the evenly distributed load while streaming data. But it ind

Re: VNodes, Replication and Minimum cluster size

2013-01-10 Thread Sam Overton
On 10 January 2013 13:07, Ryan Lowe wrote: > I have heard before that the recommended minimum cluster size is 4 (with > replication factor of 3). I am curious to know if vnodes would change that > or if that statement was valid to begin with! The reason that RF=3 is recommended is that it is the

Re: VNodes, Replication and Minimum cluster size

2013-01-10 Thread Alain RODRIGUEZ
"I am curious to know if vnodes would change that or if that statement was valid to begin with!" This question was answered yesterday by Jonathan Ellis during the Datastax C*ollege Webinar: http://www.datastax.com/resources/webinars/whatsnewincassandra12 (about the end of the video). The answer i

VNodes, Replication and Minimum cluster size

2013-01-10 Thread Ryan Lowe
I have heard before that the recommended minimum cluster size is 4 (with replication factor of 3). I am curious to know if vnodes would change that or if that statement was valid to begin with! The use case I am working on is one where we see tremendous amount of load for just 2 days out of the w