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From Thomas Jungblut <thomas.jungb...@googlemail.com>
Subject Re: PageRank hang
Date Tue, 21 Jun 2011 12:49:26 GMT
Please see my suggestion in HAMA-395
https://issues.apache.org/jira/browse/HAMA-395?focusedCommentId=13052526#comment-13052526

2011/6/21 Edward J. Yoon <edwardyoon@apache.org>

> Let's commit it.
>
> On Tue, Jun 21, 2011 at 9:38 PM, Thomas Jungblut
> <thomas.jungblut@googlemail.com> wrote:
> > Oh crap :D
> > Thanks Edward, I wasn't aware of this "trick".
> >
> > Thank you very much!
> >
> >
> >
> > 2011/6/21 Edward J. Yoon <edwardyoon@apache.org>
> >
> >> Hi,
> >>
> >> I talked w/ thomas about HAMA-395 on twitter,
> >>
> >> Thomas Jungblut:
> >> @eddieyoon the main problem is that I can't figure it out why. The BSP
> >> method finishes and written out the complete results. But no cleanup
> >> 13 minutes ago in reply to eddieyoon from web
> >>
> >> And, I'm reply to hama-dev@ so that we can share about this.
> >>
> >> As mentioned
> >>
> http://incubator.apache.org/hama/docs/r0.2.0/ApacheHama-0.2_UserGuide.pdf,
> >> The BSP job will be finished only when all the processes have no more
> >> local and outgoing queue entries and all processes are done, or killed
> >> by the user.
> >>
> >> Hence, you have to clear all queues manually after escape from main
> while
> >> loop.
> >>
> >> +    // Clears all queues entries.
> >> +    peer.clear();
> >> +    // finally save the chunk of pageranks
> >> +    PageRankBase.savePageRankMap(peer, conf, lastTentativePagerank);
> >> +    LOG.info("Finished with iteration " + iteration + "!");
> >>
> >> HAMA-395-v9.patch fixes that problem, and works well on my test cluster.
> :)
> >>
> >> --
> >> Best Regards, Edward J. Yoon
> >> @eddieyoon
> >>
> >
> >
> >
> > --
> > Thomas Jungblut
> > Berlin
> >
> > mobile: 0170-3081070
> >
> > business: thomas.jungblut@testberichte.de
> > private: thomas.jungblut@gmail.com
> >
>
>
>
> --
> Best Regards, Edward J. Yoon
> @eddieyoon
>



-- 
Thomas Jungblut
Berlin

mobile: 0170-3081070

business: thomas.jungblut@testberichte.de
private: thomas.jungblut@gmail.com

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