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

2016-12-27 Thread Matija Gobec
*Reply-To: *"user@cassandra.apache.org" <user@cassandra.apache.org> > *Date: *Monday, December 26, 2016 at 2:02 PM > *To: *"user@cassandra.apache.org" <user@cassandra.apache.org> > *Subject: *Re: Has anyone deployed a production cluster with less than

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

2016-12-26 Thread Ney, Richard
ww.aspect.com/> [mailSigLogo-rev.jpg] From: Jonathan Haddad <j...@jonhaddad.com> Reply-To: "user@cassandra.apache.org" <user@cassandra.apache.org> Date: Monday, December 26, 2016 at 2:02 PM To: "user@cassandra.apache.org" <user@cassandra.apache.org> Subject: Re: Has

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

2016-12-26 Thread Harikrishnan Pillai
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?

2016-12-26 Thread Jonathan Haddad
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?

2016-12-26 Thread Carlos Rolo
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?

2016-12-26 Thread Ney, Richard
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