On Fri, Sep 16, 2016 at 11:29 AM, Li, Guangxing <guangxing...@pearson.com> wrote:
> Hi, > > I have a 3 nodes cluster, each with less than 200 GB data. Currently all > nodes have the default 256 value for num_tokens. My colleague told me that > with the data size I have (less than 200 GB on each node), I should change > num_tokens to something like 32 to get better performance, especially speed > up the repair time. Do any of you guys have experience on > It's not enough to know the volume size, it's important to know the amount of keys which effect the merkle tree. I wouldn't change it, I doubt you'll see a significant difference in repair speed and if you'll grow the cluster you would want to have enough vnodes. > this? I am running Cassandra Community version 2.0.9. The cluster resides > in AWS. All keyspaces have RC 3. > > Thanks. > > George. >