Random timeouts on Riak

Ciprian Manea ciprian at basho.com
Mon Dec 29 06:58:29 EST 2014


Hi Jason,

Are these random timeouts happening for only one key, or is common for more?

What is the CPU utilisation in the cluster when you're experience these
timeouts?

Can you spot anything peculiar in your server's $ dmesg outputs? Any I/O
errors there?


Regards,
Ciprian

On Mon, Dec 29, 2014 at 1:55 PM, Sargun Dhillon <sargun at sargun.me> wrote:

> Several things:
> 1) I recommend you have a 5-node cluster:
> http://basho.com/why-your-riak-cluster-should-have-at-least-five-nodes/
> 2) What version of Riak are you using?
> 3) What backend(s) are you using?
> 4) What's the size of your keyspace?
> 5) Are you actively rewriting keys, or writing keys to the cluster?
> 6) Do you know how much I/O the cluster is currently doing?
>
> On Mon, Dec 29, 2014 at 2:51 AM, Jason Ryan <jason.ryan at trustev.com>
> wrote:
> > Hi,
> >
> > We are getting random timeouts from our application (>60seconds) when we
> try
> > to retrieve a key from our Riak cluster (4 nodes with a load balancer in
> > front of them). Our application just uses the standard REST API to query
> > Riak.
> >
> > We are pretty new to Riak - so would like to understand how best to debug
> > this issue? Is there any good pointers on what to start with? This is our
> > production cluster.
> >
> > Thanks,
> > Jason
> >
> >
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