[elephant-devel] Is it safe to use the same elephant store in two different processes?

[Yarek Kowalik]

I just finished some tests and I was able to connect to the same BDB from
two different SBCL processes.  I was able to create objects on one side and
retrieve on the other.  So Elephant seems fine.

I can only conclude that's something is amiss with Weblocks.  I'll look into
that now.

Thanks for all your input and suggestions.

Yarek

On Thu, Dec 11, 2008 at 4:42 PM, Ian Eslick <eslick at media.mit.edu> wrote:

> Multiple lisp processes (in a shared memory environment) should be
> safe, but I'm not sure if it's tested (anyone here done this?).
>
> I believe they have to use the same BDB environment, so you may need
> to do some checking on the proper open-store arguments to join vs.
> create an environment.  Some defaults in weblocks or elephant may
> interfere with this.  bdb-controller.lisp - open-controller definition
> shows you what arguments are passed to BDB when it is opened.
>
> Regardless, please upgrade to BDB 4.7.  Most of us using unstable are
> on 4.6 or 4.7 now.  I'd rather not track down issues associated with
> non-compatible upgrades (it should work, but testing coverage is
> getting tougher with all the system combinations of backends, BDB
> versions, DB versions, etc).
>
> Ian
>
> On Dec 11, 2008, at 5:23 PM, Yarek Kowalik wrote:
>
> > I'm trying to access BDB 4.5 backed elephant store (elephant-
> > unstable) from two different lisp processes using the elephant
> > package.   Is this a safe thing to do?
> >
> > Yarek
> > _______________________________________________
> > elephant-devel site list
> > elephant-devel at common-lisp.net
> > http://common-lisp.net/mailman/listinfo/elephant-devel
>
>
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