On Thu, Sep 1, 2011 at 5:16 PM, Ian Danforth <idanfo...@numenta.com> wrote:
> Does this scale with multiples of the replication factor or directly > with number of nodes? Or more succinctly, to double the writes per > second into the cluster how many more nodes would I need? The write throughput scales with number of nodes, so double to get double the write capacity. Increasing the replication factor in general doesn't improve performance (and increasing without increasing number of nodes decreases performance). This is because operations are performed on all available replicas (with the exception of reads with low consistency levels and read_repair_chance < 1.0). Note also that there is just one read per counter increment, not a read per replica. -- Richard Low Acunu | http://www.acunu.com | @acunu
