It sounds like you’re asking how to bootstrap without paying the cost of bootstrapping :)
If you want to scale out, you’ll need to deal with the time it takes. You can’t add a node and have it up in 15 minutes, if you’re running 3 TB it’ll take a while. The exact amount of time depends largely on your network and disk performance. Jon > On Nov 19, 2017, at 11:42 PM, Anshu Vajpayee <anshu.vajpa...@gmail.com> wrote: > > Adding more compute power means again vertical scaling. I understand this is > one method to handle the load in case of increasing demand. But it doesn't > match with philosophy of Cassandra for horizontal scaling. Hitting capacity > cannot be restricted to only compute power. > > Also in case of node failure, this vertical scaling is not going help. Where > we need to bootstrap a new or same node faster and quicker in ring. > > > On Sat, Nov 18, 2017 at 4:20 AM, Ben Slater <ben.sla...@instaclustr.com > <mailto:ben.sla...@instaclustr.com>> wrote: > Hi Anshu > > For quick scaling, we’ve had success with an approach of scaling up the > compute capacity (attached to EBS) rather than scaling out with more nodes in > order to provide relatively quick scale up/down capability. The approach is > implemented as part of our managed service but the concept is generic enough > to work in any virtualised environment. You can find more detail here if > interested: > https://www.instaclustr.com/instaclustr-dynamic-resizing-for-apache-cassandra/ > > <https://www.instaclustr.com/instaclustr-dynamic-resizing-for-apache-cassandra/> > > Cheers > Ben > > On Sat, 18 Nov 2017 at 05:02 Anshu Vajpayee <anshu.vajpa...@gmail.com > <mailto:anshu.vajpa...@gmail.com>> wrote: > Cassandra supports elastic scalability - meaning on demand we can increase > or decrease #of nodes as per scaling demand from the application. > > Let's consider we have 5 node cluster and each node has data pressure of > about 3 TB. > > Now as per sudden load, we want to add 1 node in the cluster as quick as > possible. > > Please suggest what would be the fastest method to add the new node on > cluster? Normal bootstrapping will definitely take time because it needs to > stream at least 2.5 TB ( 5*3TB/6 nodes) from 5 nodes. Please consider > multi-core machines & 10 Gpbs card . > > Streaming throughput can help but not much. > > The similar requirement can come when we want to replace the failed node due > to any hardware. > > Please suggest any best practice or scenarios to deal with above situations. > > Scaling is good but how quickly we can scale is another thing to consider. > > > > > > > > > -- > C*heers, > Anshu V > > > -- > Ben Slater > Chief Product Officer > <https://www.instaclustr.com/> > <https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr> > <https://www.linkedin.com/company/instaclustr> > Read our latest technical blog posts here <https://www.instaclustr.com/blog/>. > This email has been sent on behalf of Instaclustr Pty. Limited (Australia) > and Instaclustr Inc (USA). > This email and any attachments may contain confidential and legally > privileged information. If you are not the intended recipient, do not copy > or disclose its content, but please reply to this email immediately and > highlight the error to the sender and then immediately delete the message. > > > > -- > C*heers, > Anshu V > >
