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From Silvio Di gregorio <silvio.digrego...@gmail.com>
Subject Re: connected components example in giraph 1.0
Date Fri, 04 Oct 2013 12:13:33 GMT
i've specified  -of
 org.apache.giraph.io.formats.IdWithValueTextOutputFormat

but the same error was produced

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)
        at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:984)
        at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:945)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
        at
org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:945)
        at org.apache.hadoop.mapreduce.Job.submit(Job.java:566)
        at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:596)
        at org.apache.giraph.job.GiraphJob.run(GiraphJob.java:237)
        at org.apache.giraph.GiraphRunner.run(GiraphRunner.java:94)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
        at org.apache.giraph.GiraphRunner.main(GiraphRunner.java:124)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:208)



2013/10/4 Claudio Martella <claudio.martella@gmail.com>

> 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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