Not much luck with Riak 0.7.1 on CentOS 5.4

Andy Gross andy at basho.com
Thu Feb 4 09:01:37 EST 2010


Hi Mårten,

It sounds like you're running into a limit on number of open file
descriptors.  Try using ulimit -n to raise your open file limit and you
should be able to run with larger ring sizes.

Thanks,

Andy

On Thu, Feb 4, 2010 at 3:44 AM, Mårten Gustafson <marten.gustafson at gmail.com
> wrote:

> On Wed, Feb 3, 2010 at 4:08 PM, Andy Gross <andy at basho.com> wrote:
> > Hi Mårten,
> > I missed a step in my instructions below.  Here's the proper order of
> > operations:
> > % rm -Rf rel/riak
> > % make clean all
> > % make rel
> > % cd rel/riak
> > % bin/riak console (or bin/riak start to launch in the background - you
> can
> > run bin/riak attach later to get an Erlang console)
> > Sorry 'bout that.
>
> Thanks Andy!
>
> I did the above and also ran riak-admin test which completed
> successfully. I then moved the rel/riak directory to its proper
> location which also included using my own app.config. This caused the
> same crash behaviour as yesterday. Thus I started to suspect my
> configuration.
>
> Since the crash reports "dets:open_file failed" the only configuration
> key I could think of was ring_creation_size. So I changed this back to
> the default of 64 instead of 1024 that I'd bumped it to. This seems to
> have solved the problems. I've runs some initial test putting keys on
> node X and retrieving from node Y and Z.
>
> 1) Any thoughts on why the ring_size would cause the crash - some
> system resource I ought to check?
> 2) On a side note. When I run riak stop I always get left with a epmd
> process is that intended?
>
>
>
> /mårten.
>
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