Hi John,
We run using 4T GP2 volumes, which guarantee 10k iops. Even at 1M writes per
second on 60 nodes, we didn’t come close to hitting even 50% utilization (10k
is more than enough for most workloads). PIOPS is not necessary.
From: John Wong
Reply-To: "user@cassandra.apache.org"
Date:
How about reads? Any differences between read-intensive and write-intensive
workloads?
-- Jack Krupansky
On Sun, Jan 31, 2016 at 3:13 AM, Jeff Jirsa
wrote:
> Hi John,
>
> We run using 4T GP2 volumes, which guarantee 10k iops. Even at 1M writes
> per second on 60 nodes, we didn’t come close to h
Also in that video - it's long but worth watching
We tested up to 1M reads/second as well, blowing out page cache to ensure we
weren't "just" reading from memory
--
Jeff Jirsa
> On Jan 31, 2016, at 9:52 AM, Jack Krupansky wrote:
>
> How about reads? Any differences between read-intensive
Thank you all for the suggestions. I'm torn between GP2 vs Ephemeral. GP2
after testing is a viable contender for our workload. The only worry I have
is EBS outages, which have happened.
On Sunday, January 31, 2016, Jeff Jirsa wrote:
> Also in that video - it's long but worth watching
>
> We tes
Free to choose what you'd like, but EBS outages were also addressed in that
video (second half, discussion by Dennis Opacki). 2016 EBS isn't the same as
2011 EBS.
--
Jeff Jirsa
> On Jan 31, 2016, at 8:27 PM, Eric Plowe wrote:
>
> Thank you all for the suggestions. I'm torn between GP2 vs E
Jeff,
If EBS goes down, then EBS Gp2 will go down as well, no? I'm not
discounting EBS, but prior outages are worrisome.
On Sunday, January 31, 2016, Jeff Jirsa wrote:
> Free to choose what you'd like, but EBS outages were also addressed in
> that video (second half, discussion by Dennis Opacki
Yes, but getting at why you think EBS is going down is the real point. New GM
in 2011. Very different product. 35:40 in the video
--
Jeff Jirsa
> On Jan 31, 2016, at 9:57 PM, Eric Plowe wrote:
>
> Jeff,
>
> If EBS goes down, then EBS Gp2 will go down as well, no? I'm not discounting
> EBS
http://m.theregister.co.uk/2013/08/26/amazon_ebs_cloud_problems/
That's what I'm worried about. Granted that's an article from 2013, and While
the the general purpose EBS volumes are performant for a production C*
workload, I'm worried about EBS outages. If EBS is down, my cluster is
down.
On Mon
Hi all! I have a table with simple primary key (one field on primary key
only), and ~1 million records. Table stored on single-node C* 2.2.4.
Problem: when I'm trying to execute "SELECT count(*) FROM my_table;",
operation is timed out.
As I understand, 1 mln rows is not so big dataset to use MapRed
