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From Claudio Martella <claudio.marte...@gmail.com>
Subject Re: connected components example in giraph 1.0
Date Fri, 04 Oct 2013 11:35:46 GMT
Hi,

you need to specify the vertex outputformat class (-vof option), e.g.
org.apache.giraph.io.formats.IdWithValueTextOutputFormat.


On Fri, Oct 4, 2013 at 1:06 PM, Silvio Di gregorio <
silvio.digregorio@gmail.com> wrote:

>
> Hi,
>
> I hope I have sent to the right address.
>
> i have a graph (directed and unweighted) stored in hdfs like a adjacency
> list (140Milions of edges 6Milions of vertex)
>
> node<tab>neighbors
>
> 23   2   1    3    4    3
>
> 1 999 99923 909 .......
>
> ......
>
> hadoop version Hadoop 2.0.0-cdh4.3.0 - java 1.6
>
>
> I have executed the giraph-1.0 connected components example, in this
> fashion
>
>> > hadoop jar /usr/local/giraph/giraph-examples/target/giraph-
>> examples-1.0.0-for-hadoop-0.20.203.0-jar-with-dependencies.jar
>> org.apache.giraph.GiraphRunner org.apache.giraph.examples.ConnectedComponentsVertex
>> -vif org.apache.giraph.io.formats.IntIntNullTextInputFormat -vip
>> /user/hdfs/lista_adj_txt -op connectedgiraph --workers 4
>
>
>
> and then fail with:
>
> 13/10/04 09:28:29 INFO utils.ConfigurationUtils: No edge input format
> specified. Ensure your InputFormat does not require one.
>
>
>
> 13/10/04 09:28:29 INFO utils.ConfigurationUtils: No output format
> specified. Ensure your OutputFormat does not require one.
>
>
>
> 13/10/04 09:28:30 INFO job.GiraphJob: run: Since checkpointing is disabled
> (default), do not allow any task retries (setting mapred.map.max.attempts =
> 0, old value = 4)
>
>
>
> 13/10/04 09:28:31 WARN mapred.JobClient: Use GenericOptionsParser for
> parsing the arguments. Applications should implement Tool for the same.
>
>
>
> 13/10/04 09:28:31 INFO mapred.JobClient: Cleaning up the staging area
> hdfs://
> srv-bigdata-dev-01.int.sose.it:8020/user/hdfs/.staging/job_201309181636_0535
>
> Exception in thread "main" java.lang.IncompatibleClassChangeError: Found
> interface org.apache.hadoop.mapreduce.JobContext, but class was expected
>
>         at
> org.apache.giraph.bsp.BspOutputFormat.checkOutputSpecs(BspOutputFormat.java:43)
>
>         ......
>
>
>
>
>
> Thanks in advance
>
>


-- 
   Claudio Martella
   claudio.martella@gmail.com

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