The high CPU node got replaced and now I'm not getting abnormally high CPU
from one node. They all are evenly balanced now.
On 29 January 2013 16:29, Jabbar <aja...@gmail.com> wrote:
> Hello,
>
> I've been testing a four identical node cassanda 1.2 cluster for a number
> of days. I have written a c# client using cassandra sharp() which inserts
> data into a table.
>
> The keyspace difinition is
>
> CREATE KEYSPACE "data"
> WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'dc1' : 3};
>
>
> The table definition is
>
> CREATE TABLE datapoints (
> siteid bigint,
> time timestamp,
> channel int,
> data float,
> PRIMARY KEY ((siteid, channel),time)
> )
>
>
> I am finding that the CPU load on one of the servers stays at ~90% whilst
> the load on the other servers stays < 40%. All the servers are supposed to
> be identical.
>
> The client library I am using does load balancing between all nodes.
>
> I have also used the cassandra stress tool as follows
>
> cassandra-stress -d 192.168.21.7,192.168.21.9,192.168.21.12,192.168.21.14
> --replication-factor 3 -n 10000000 -t 100
>
> and have found that it behaves similarly.
>
> Can somebody explain why this happens?
>
>
>
>
> --
> Thanks
>
> A Jabbar Azam
>
--
Thanks
A Jabbar Azam
