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Posted to user@cassandra.apache.org by Jean-Yves LEBLEU <jl...@gmail.com> on 2010/08/02 15:05:26 UTC
Server takes a long time to answer
Hi all,
We have a cassandra installation with two nodes in a ring, replication
factor = 2, some times cassandra becomes non-responsive, it takes
about three minutes before answering to a get.
Do you have any idea of what we should check when it happens ? Or what
could cause the problem.
We are using cassandra release 6.3.
Thanks & regards.
Jean-Yves
Re: Server takes a long time to answer
Posted by Jean-Yves LEBLEU <jl...@gmail.com>.
Thanks for the anwser.
We started cassandra with 1 Gbyte of memory ... but on a machine with
only 256 Mbytes of memory. Seems that it was the problem. We added
memory on the server and it seems to be better.
Regards.
Jean-Yves
On Mon, Aug 2, 2010 at 9:31 PM, Jonathan Ellis <jb...@gmail.com> wrote:
> Sounds a lot like it's running out of memory. Check your logs for
> GCInspector lines.
>
> Easiest solution: increase the argument to Xmx in cassandra.in.sh.
>
> On Mon, Aug 2, 2010 at 8:05 AM, Jean-Yves LEBLEU <jl...@gmail.com> wrote:
>> Hi all,
>>
>> We have a cassandra installation with two nodes in a ring, replication
>> factor = 2, some times cassandra becomes non-responsive, it takes
>> about three minutes before answering to a get.
>> Do you have any idea of what we should check when it happens ? Or what
>> could cause the problem.
>> We are using cassandra release 6.3.
>> Thanks & regards.
>> Jean-Yves
>>
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of Riptano, the source for professional Cassandra support
> http://riptano.com
>
Re: Server takes a long time to answer
Posted by Jonathan Ellis <jb...@gmail.com>.
Sounds a lot like it's running out of memory. Check your logs for
GCInspector lines.
Easiest solution: increase the argument to Xmx in cassandra.in.sh.
On Mon, Aug 2, 2010 at 8:05 AM, Jean-Yves LEBLEU <jl...@gmail.com> wrote:
> Hi all,
>
> We have a cassandra installation with two nodes in a ring, replication
> factor = 2, some times cassandra becomes non-responsive, it takes
> about three minutes before answering to a get.
> Do you have any idea of what we should check when it happens ? Or what
> could cause the problem.
> We are using cassandra release 6.3.
> Thanks & regards.
> Jean-Yves
>
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com