Probably decreasing tokens number can help to mange big cluster?
Best regards, Vladimir Yudovin, Winguzone - Cloud Cassandra Hosting ---- On Mon, 21 Aug 2017 19:38:37 -0400 Eduard Tudenhoefner <[email protected]> wrote ---- We've been doing successful testing with multi-DC setups and 500 nodes per DC. However, I agree with Jon here. Certain things are easier/faster with e.g. 5x100 node clusters than 1x500 node cluster. Cheers On Mon, Aug 21, 2017 at 10:16 AM, Jon Haddad <[email protected]> wrote: As far as I know, those 75K nodes are not in a single cluster. If memory serves correctly (and this article seems to indicate that it does http://www.techrepublic.com/article/apples-secret-nosql-sauce-includes-a-hefty-dose-of-cassandra/), you’ll see clusters of 1,000 nodes. Things start to get a little hairy once you go above a couple hundred nodes. I would rather run 5 100 node clusters than a single 500 node cluster. In theory, once you’ve built out the tooling to manage 2 clusters you should be able to apply it to manage 20 (reality always gets in the way though…) Jon On Aug 21, 2017, at 9:15 AM, techpyaasa . <[email protected]> wrote: Thanks lot for reply :) On Aug 21, 2017 6:44 PM, "Vladimir Yudovin" <[email protected]> wrote: Actually there are clusters of thousandths nodes: Some of the largest production deployments include Apple's, with over 75,000 nodes storing over 10 PB of data Best regards, Vladimir Yudovin, Winguzone - Cloud Cassandra Hosting ---- On Mon, 21 Aug 2017 08:35:37 -0400 techpyaasa . <[email protected]> wrote ---- Hi Is there any limit on having number of nodes in c* cluster. Right now we have c*-2.1.17 cluster with 3 DCs each DC with 3 groups & each group has 21 nodes. We wanted to increase the cluster capacity by adding 6 nodes per group as many of nodes disk usage crossed 65%. So just wanted to clarify is there any limit/drawback having huge cluster/too many nodes in a c* cluster Thanks in advance TechPyaasa
