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From Maria Stylianou <mars...@gmail.com>
Subject Re: Problem running PageRank Example
Date Thu, 18 Apr 2013 23:32:00 GMT
My first guess:
The directories for inputFormat and outputFormat are missing the folder
'formats'.
-if org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexInputFormat
-of org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexOutputFormat

Maria


On Thu, Apr 18, 2013 at 9:04 PM, Alexandros Daglis <
alexandros.daglis@epfl.ch> wrote:

> Hello everybody,
>
> it's been a while since I last ran the PageRank example. Back then, there
> was no GiraphRunner, and the example cound be executed directly. Now, I am
> trying to test something but I cannot manage to make the example work. I
> use the following command:
>
> hadoop jar
> giraph-0.2-SNAPSHOT-for-hadoop-0.20.203.0-jar-with-dependencies.jar
> org.apache.giraph.GiraphRunner
> org.apache.giraph.examples.SimplePageRankVertex
> -if org.apache.giraph.io.JsonLongDoubleFloatDoubleVertexInputFormat -w 1
> -ip JSON_input -of
> org.apache.giraph.io.JsonLongDoubleFloatDoubleVertexOutputFormat -op
> outputJSON
>
> The map phase proceeds up to 50% and then it freezes.
> If I use 2 workers it freezes at 66%, with 3 workers at 75% etc.
>
> Anyone has any idea about what might be causing the problem?
>
> Thanks a lot in advance,
> Alexandros
>



-- 
Maria Stylianou
Intern at Telefonica, Barcelona, Spain
Master Student of European Master in Distributed
Computing<http://www.kth.se/en/studies/programmes/master/em/emdc>
Universitat Polit├Ęcnica de Catalunya - BarcelonaTech, Barcelona, Spain
KTH Royal Institute of Technology, Stockholm, Sweden
Phone: +34 622 211 885

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