Hi there,
I have a Cassandra cluster running on Kubernetes. This cluster has 8
running instances with 8Gb of memory and 5 CPU cores. I can see a high load
avg in multiple instances, but no IO wait and moderate CPU usage.
Do you know how I can solve this issue?
Best,
Igor
but
> hopefully shouldn't be related. Has that stuck compaction moved since last
> week?
>
>
> On 1 September 2017 at 22:54, Fay Hou [Storage Service] <
> fay...@coupang.com> wrote:
>
>> try to do a rolling restart for the cluster before doing a compation
Some generic errors:
*[aladdin@ip-172-16-1-10 cassandra]$ tail cassandra.log | grep -i error*
*[aladdin@ip-172-16-1-10 cassandra]$ tail cassandra.log | grep -i excep*
*[aladdin@ip-172-16-1-10 cassandra]$ tail cassandra.log | grep -i fail*
*[aladdin@ip-172-16-1-10 cassandra]$ tail debug.log | grep
Hey Kurt,
Thanks for your reply.
Soon as the whole cluster was upgraded (using existing nodes) it worked
pretty well. After a while, the high cpu usage/ pending compactions was
back affecting all cluster.
It's still an open problem.
2017-08-21 20:24 GMT-03:00 kurt greaves :
> Why are you adding
Hi there,
I've been trying to upgrade a Cassandra 3.9 cluster to Cassandra 3.11.
Whenever I try to add a new Cassandra 3.11 node to the main datacenter,
using `-Dcassandra.force_3_0_protocol_version=true` on the new node, this
new node uses almost 100% of its CPU. Checking `nodetool compactionstat
> Hi Igor,
> Have a look into that document. ;-)
> https://github.com/apache/cassandra/blob/cassandra-3.11/NEWS.txt
> Thanks,
> Petrus Silva
>
> On Fri, Aug 4, 2017 at 10:15 AM, Igor Leão wrote:
>
>> Hi there,
>>
>> Is it possible to add a Cassandra 3.11
Hi there,
Is it possible to add a Cassandra 3.11 node into a Cassandra 3.9 cluster?
I wish I could upgrade this cluster without uninstalling and installing
Cassandra on existing nodes, just by adding and removing nodes.
Thanks in advance!
t;
>>> Do you see data on other DC or just directory structure? Directory
>>> structure would populate because it is DDL but inserts shouldn’t populate,
>>> ideally.
>>>
>>> On May 16, 2017, at 3:19 PM, suraj pasuparthy <
>>> suraj.pasupar...@gmail
as input. As well as add DC2 node in ignore nodes, so
> request never goes to that node.
>
> Thanks,
> Varun
>
> On Wed, May 10, 2017 at 1:21 PM, Igor Leão wrote:
>
>> Hey everyone,
>>
>> Imagine a have Cassandra cluster with 4 nodes.
>>
>> Is it pos
Hey everyone,
Imagine a have Cassandra cluster with 4 nodes.
Is it possible to have a separate node which would not receive requests but
would by in sync with the rest of the cluster? Ideally this super node
would have all data of the cluster.
I want to take a snapshot of this node from time to
gt; copy system_traces.events TO 'traces_dump.csv';
>
> Also do make sure you dont set trace probability to a high number if
> working on a production database as it can adversely impact performance.
>
> Regards,
>
> On Sun, Feb 19, 2017 at 1:28 AM, Igor Leão wrote:
>
>
iver/2.1/manual/logging/
>
> Slow Query logger for server was introduced in C* 3.10 version. Details:
> https://issues.apache.org/jira/browse/CASSANDRA-12403
>
> Regards,
> Bhuvan
>
> On Sun, Feb 19, 2017 at 12:59 AM, Igor Leão wrote:
>
>> Hi there,
>>
>
Hi there,
I'm wondering how to log queries from Cassandra. These queries can be
either slow queries or all queries. The only constraint is that I should do
this on server side.
I tried using `nodetool settraceprobability`, which writes all queries to
the keyspace `system_traces`. When I try to se
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