Just a shot in the dark, but what is your setting of
vm.max_map_count in /etc/sysctl.conf ?
It is recommended to set it to:
vm.max_map_count = 1048575
Source:
https://docs.datastax.com/en/landing_page/doc/landing_page/recommendedSettingsLinux.html
We saw a similar problem in the past where mmap
up at scale. And even where cost is no issue, the
>> additional isolation and workload tailoring is still highly valuable.
>>
>> On Wed, Feb 22, 2017 at 12:01 PM Edward Capriolo <edlinuxg...@gmail.com
>> <mailto:edlinuxg...@gmail.com>> wrote:
>>
>>
nse to move all the small use
cases into their separate clusters.
On Mon, 20 Feb 2017 at 22:21 Oleksandr Shulgin <oleksandr.shul...@zalando.de>
>>> wrote:
>>>
>>>> On Sat, Feb 18, 2017 at 3:12 AM, Abhishek Verma <ve...@uber.com> wrote:
>>>>
>>>
Cassandra is being used on a large scale at Uber. We usually create
dedicated clusters for each of our internal use cases, however that is
difficult to scale and manage.
We are investigating the approach of using a single shared cluster with
100s of nodes and handle 10s to 100s of different use
t;
>>
>> It IS common, I imagine, for there to be schema mismatches temporarily
>> while you have a mixed version cluster – this isn’t necessarily a huge
>> problem, but do try to get to 3.0.8 as quickly as possible once you start,
>> and if you can avoid administrati
Hi Cassandra users,
We are trying to upgrade our Cassandra version from 2.2.5 to 3.0.8 (running
on Mesos, but that's besides the point). We have two datacenters, so in
order to preserve our data, we are trying to upgrade one datacenter at a
time.
Initially both DCs (dc1 and dc2) are running
