When in doubt, repair. Nodetool snapshot won't be perfectly consistent
across all the nodes anyway since you're snapshotting on each node
individually.
On Tue, Oct 29, 2019, 8:31 PM Ankit Gadhiya wrote:
> Thanks Paul. This is interesting.
> So, anything I need to do after cp? - nodetool
Hi Reid,
I don't have anymore this loading problem.
I solved by changing the Cassandra Driver Configuration.
Now my cluster is pretty stable and I don't have machines with crazy CPU
Load.
The only thing not urgent but I need to investigate is the number of
ESTABLISHED TCP connections. I see just
One of the problems I have experienced in the past has more to do with Java
than Cassandra in particular, and that is the JVM ignoring cgroups. With
Cassandra in particular I would often see memory usage go higher than what
was desired. This would lead to pods getting oom killed. This was fixed in
Oh nvm, didn't see the later msg about just posting what your fix was.
R
On 10/30/19, 4:24 PM, "Reid Pinchback" wrote:
Message from External Sender
Hi Sergio,
Assuming nobody is actually mounting a SYN flood attack, then this sounds
like you're either being hammered
Hi Sergio,
Assuming nobody is actually mounting a SYN flood attack, then this sounds like
you're either being hammered with connection requests in very short periods of
time, or your TCP backlog tuning is off. At least, that's where I'd start
looking. If you take that log message and google
Hi Jain,
Thanks for your comments about CassKop.
We began the development of Casskop at the beginning of 2018. At this time,
some K8S objects (i.e. statefulsets, operators, …) were still in beta
version and we discovered a few strange behaviours.
We upgraded to K8S 1.12 in mid-2018.
After
https://docs.datastax.com/en/drivers/java/2.2/com/datastax/driver/core/policies/LatencyAwarePolicy.html
I had to change the Policy in the Cassandra Driver. I solved this problem few
weeks ago. I am just posting the solution for anyone that could hit the same
issue.
Best,
Sergio
On 2019/10/17
Oh, my mistake, there was also another subdirectory there with the old rpm’s, I
missed that the first time. Thanks.
From: Reid Pinchback
Reply-To: "user@cassandra.apache.org"
Date: Wednesday, October 30, 2019 at 1:47 PM
To: "user@cassandra.apache.org"
Subject: Re: Where to get old RPMs?
Alas, that wasn’t the info I was looking for Jon, the archive site you pointed
to is for the jars, not the rpms. The rpm site you pointed at only has the
current, not the past point releases. Michael had the magic link though, I’m
all set.
R
From: Jon Haddad
Reply-To:
Hi Jean
Thanks for replying. I had seen CassKop and the amount functionality it
provides is quite awesome as compared to other operators.
I would like to know how stable is kubernetes for stateful/database
applications right now?
I haven't read/heard any major production stateful application
It's possible to overcount when a server is overwhelmed or slow to respond
and you're getting exceptions on the client. If you retry your query, it's
possible you'll increment twice, once for the original query (which maybe
threw an exception) and again on the retry.
Use counters if you're OK
Archives are here: http://archive.apache.org/dist/cassandra/
For example, the RPM for 3.11.x you can find here:
http://archive.apache.org/dist/cassandra/redhat/311x/
The old releases are removed by Apache automatically as part of their
policy, it's not specific to Cassandra.
On Wed, Oct 30,
Thanks Michael, that was exactly the info I needed.
On 10/30/19, 1:44 PM, "Michael Shuler" wrote:
Message from External Sender
On 10/30/19 12:39 PM, Reid Pinchback wrote:
> With the latest round of C* updates, the yum repo no longer has
> whatever the previous
On 10/30/19 12:39 PM, Reid Pinchback wrote:
With the latest round of C* updates, the yum repo no longer has
whatever the previous version is. For environments that try to do
more controlled stepping of release changes instead of just taking
the latest, is there any URL for previous versions of
With the latest round of C* updates, the yum repo no longer has whatever the
previous version is. For environments that try to do more controlled stepping
of release changes instead of just taking the latest, is there any URL for
previous versions of RPMs? Previous jars I can find easily
What about repairs? Can I just repair that table on a regular basis as any
other?
‐‐‐ Original Message ‐‐‐
On Wednesday, 30 October 2019 16:26, Jon Haddad wrote:
> Counters are good for things like page views, bad for money. Yes they can
> under or overcount in certain situations.
Counters are good for things like page views, bad for money. Yes they can
under or overcount in certain situations. If your cluster is stable,
you'll see very little of it in practice.
I've done quite a bit of tuning of counters. Here's the main takeaways:
* They do a read before a write, so
Hi,
We are currently developping CassKop, a Cassandra operator for K8S.
This operator is developped in Go, based on the operator-sdk framework.
At this time of the project, the goal is to deploy a Cassandra cluster in 1
Kubernetes datacenter, but this will change in next versions to deal with
Hi,
I would like to use counters but I am not sure I should.
I read a lot of articles on the Internet how counters are bad / wrong /
inaccurate etc etc ...
Let's be honest, counters in Cassandra have quite a bad reputation.
But all stuff I read about that was quite old, I know there was
Hi everyone,
Is there anyone who is running Cassandra on K8s clusters. It would be great
if you can share your experience , the operator you are using and the
overall stability of stateful sets in Kubernetes
-Akshit
And also aws ec2 stop and start comes with new instance with same ip and
all our file systems are in ebs mounted fine. Does coming new instance
with same ip cause any gossip issues?
On Tue, Oct 29, 2019, 6:16 PM Rahul Reddy wrote:
> Thanks Alex. We have 6 nodes in each DC with RF=3 with CL
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