Re: Has anyone deployed a production cluster with less than 6 nodes per DC?

Everyone, thank you for the responses Jon, to answer your question we’re using the General Purpose SSD with IOPS of 1500/3000 so based on your definition I guess we’re using the awful ones since they aren’t provisioned IOPS. We’re also trying G1 garbage collection. I also just looked at our

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

> I dont mean to say JVM shouldn't be in hands of large entity but rather If it was in the hands of companies like Google or Microsoft or say DataStax I would have been more happy :) Considering DataStax just announced they are pulling back from open source Cassandra and are focusing on their

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

The observations that James Gosling did aren't just relevant in the year 2010 but rather he expressed Oracle's DNA. He clearly expressed how the upper management in that company works. And even today it works the same way starting from decades ago. If you know a character of someone you can

Re: Has anyone deployed a production cluster with less than 6 nodes per DC?

1 million write per hour is around 250 writes per second .its easily achievable with 3 nodes .make sure that you have a good gc tuning and compaction tunings. Sent from my iPhone On Dec 26, 2016, at 1:27 PM, Ney, Richard > wrote: My

Re: Has anyone deployed a production cluster with less than 6 nodes per DC?

There's nothing wrong with running a 3 node DC. A million writes an hour is averaging less than 300 writes a second, which is pretty trivial. Are you running provisioned SSD EBS volumes or the traditional, awful ones? RF=2 with Quorum is kind of pointless, that's the same as CL=ALL. Not

Re: Has anyone deployed a production cluster with less than 6 nodes per DC?

It depends on a lot of factors. What causes the cluster to get crazy? I/O, Network, CPU? I manage clusters of all sizes (even 3 nodes per DC) but it all depends on usage and configuration. Regards, Carlos Regards, Carlos Juzarte Rolo Cassandra Consultant / Datastax Certified Architect /

Has anyone deployed a production cluster with less than 6 nodes per DC?

My company has a product we’re about to deploy into AWS with Cassandra setup as a two 3 node clusters in two availability zones (m4.2xlarge with 2 500GB EBS volumes per node). We’re doing over a million writes per hour with the cluster setup with R-2 and local quorum writes. We run successfully

Re: Openstack and Cassandra

Hi Shalom, I assume you'll use KVM virtualization so pay attention to your stack at every level:- Nova e.g. CPU pinning, NUMA awareness if relevant, etc. Have a look to extra specs.- libvirt - KVM- QEMU You can also be interested by resources quota on other OpenStack VMs that will be colocated

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

A note on this video from the respected James Gosling, is that it is from 2010, when Oracle was new to the Java stewardship ecosystem. The company came a long since. I'm not saying everything is perfect. But I doubt that a product such as the JVM will be as good without a company guidance. The

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

On Sat, Dec 24, 2016 at 5:58 AM, Kant Kodali wrote: > @Edward Agreed JVM is awesome and it is a work of many smart people and > this is obvious if one looks into the JDK code. But given Oracle history of > business practices and other decisions it is a bit hard to convince