[OpenDHT-Users] [Planetlab-users] Fwd: Notice of my intention to stop maintaining OpenDHT

[Bogdan Nicolae]

I deployed and used Bamboo in Grid 5000, an infrastructure distributed
in 9 sites around France,
for research in large-scale parallel and distributed systems.

This happened many months ago, but I wrote a patch for it to use the
latest Berkley DB versions.
The patch was submitted to this list. Just wanted to let you know.

---

Bogdan NICOLAE
Graduate Student, University of Rennes I
INRIA E210 Vert
Campus de Beaulieu
35042 RENNES Cedex
+33 (0)2 99 84 22 78

> 50k-100k clients?  That makes me feel a lot better about how much
> OpenDHT is suffering.  :)  I certainly never tested with that many
> clients.
>
> I think the major issue right now is that the Berkeley DB instance on
> each node eventually falls over, either because it's an old and buggy
> version or because I'm using it wrong.  It takes a while to happen,
> though.  For now, I've been running a script that just deletes every
> node's storage every now and then.
>
> It might be enough to just blow away each node once per month, and if
> you spread them over a month, you might not even lose any data.  But I
> haven't tried that.  A better solution would be to debug and fix the
> root problem, of course, but I haven't had the time or inclination to
> do that.
>
> Sean
>
>
>
> On Tue, May 5, 2009 at 6:55 AM, Arvind Krishnamurthy
> <arvind at cs.washington.edu> wrote:
>   
>> Sean,
>>
>> As you know, we have been using OpenDHT to store updates from Adeona
>> clients.  We think we have about 50K to 100K active clients out there and
>> want to continue to use OpenDHT as an open source storage cloud that is
>> accessible through port 5851.
>>
>> Having said that, we don't know how much work would be involved in
>> maintaining a running instance of openDHT.  So we are thinking of testing
>> waters a bit before committing to maintaining it on a long term basis.  We
>> are planning on running a new instance of openDHT on PL to understand what
>> it takes to configure and maintain openDHT.  If we think we are up to the
>> task, we would then be happy to maintain the current deployment on 5851.
>>  And we would love to get help from others who are also interested in having
>> an active instance of openDHT.
>>
>> Comments and thoughts most welcome.  And thanks a bunch for maintaining
>> openDHT for the past few years!
>>
>>                        Arvind
>>
>>
>>     
>>> ---------- Forwarded message ----------
>>> From: Sean Rhea <sean.c.rhea at gmail.com>
>>> Date: Sun, May 3, 2009 at 7:41 PM
>>> Subject: Notice of my intention to stop maintaining OpenDHT
>>> To: opendht-users at opendht.org
>>>
>>> All,
>>>
>>> As I'm sure you're all aware, OpenDHT is pretty creaky these days.  It
>>> was the subject of my Ph.D. thesis in 2005, and as is often the case
>>> with Ph.D. theses, I've had little inclination to maintain it since
>>> then.  The goal of the project was to nurture new uses of DHTs so that
>>> they would find mainstream acceptance.  Now that Amazon is using DHTs
>>> (e.g., Dynamo), I feel like we've more than met that goal.
>>>
>>> I could continue to leave it up, and continue not maintaining it, but
>>> doing so feels like a waste of everyone's time.  It wastes other
>>> people's time as they consider using it, and it wastes my time
>>> responding to emails of people already using it.
>>>
>>> Rather than have this situation continue indefinitely, I'm announcing
>>> today that sometime on July 1, 2009, I will take OpenDHT down.
>>>
>>> For those of you that are currently using OpenDHT, the Bamboo code
>>> base that OpenDHT runs will remain available at bamboo-dht.org.  You
>>> are free to set up your own instance on PlanetLab, and you're free to
>>> share that instance with others as you see fit.  You're just not going
>>> to be able to share my instance any more.
>>>
>>> The file src/bamboo/planetlab/openhash.cfg in the Bamboo source
>>> distribution is the configuration I use in OpenDHT.  You should be
>>> able to modify it a little and be up and running in a day or less.
>>>
>>> If one or more of you want to collaborate on running Bamboo (or
>>> anything else that accepts puts and gets) on PlanetLab port 5851, that
>>> would be great.  I'll happily relinquish my claim to the port.  This
>>> mailing list would be a good place to organize such a plan.
>>>
>>> Sean
>>> --
>>> “We’re borrowing money from China to buy oil from the Persian Gulf to
>>> burn it in ways that destroy the planet.  Every bit of that’s got to
>>> change.”  -- Al Gore
>>>
>>> _______________________________________________
>>> Users mailing list: Users at lists.planet-lab.org
>>> https://lists.planet-lab.org/mailman/listinfo/users
>>>       
>>