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

[Sean Rhea]

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
>
>



-- 
“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