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 oneself
> that everythi
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 mod
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 w
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
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 / Cassa
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
recomm
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
mailto:richard@aspect.com>> wrote:
My company has a product we're abo
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 predict
> 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 Data
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 app
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