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From Marcin Biczak <marcinbic...@gmail.com>
Subject Re: SimpleShortestPathsVertex does not work when compiled separately
Date Tue, 24 Jul 2012 12:37:04 GMT
Hi

I had similar problem, here is "my solution",
http://stackoverflow.com/questions/10700853/giraph-shortest-paths-example-classnotfoundexception.
But I still don't know why I have do it like this, maybe someone here can
explain this?

regards
marcin biczak

2012/7/24 KAUSHIK SARKAR <countkaushik@gmail.com>

> Hi,
>
> I created a new test project and copied the code from
> SimpleShortestPathsVertex.java file (org.apache.giraph.examples) into it.
> But when I run it, it gives me java.lang.ClassNotFoundException. However,
> if I run the same program from the  giraph-0.1-jar-with-dependencies.jar,
> it runs just fine. Following is the relevant information :
>
> Hadoop version: hadoop-1.0.3 (running in pseudo distributed mode)
> giraph version: giraph-0.1
> jar created with Eclipse 3.3.1
> Output:
>
> kaushik@kaushik-laptop:~/hadoop/hadoop-1.0.3$ bin/hadoop jar
> ../jars/test.jar /shortestPathsInputGraph /shortestPathsOutputGraph 0 3
> 12/07/23 18:29:10 INFO mapred.JobClient: Running job: job_201207231222_0021
> 12/07/23 18:29:11 INFO mapred.JobClient:  map 0% reduce 0%
> 12/07/23 18:29:20 INFO mapred.JobClient: Task Id :
> attempt_201207231222_0021_m_000005_0, Status : FAILED
> java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.ClassNotFoundException:
> test.giraph.SimpleShortestPathsVertex$SimpleShortestPathsVertexOutputFormat
>         at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:899)
>         at
> org.apache.giraph.graph.BspUtils.getVertexOutputFormatClass(BspUtils.java:134)
>         at
> org.apache.giraph.bsp.BspOutputFormat.getOutputCommitter(BspOutputFormat.java:56)
>         at org.apache.hadoop.mapred.Task.initialize(Task.java:515)
>         at org.apache.hadoop.mapred.MapTask.run(MapTask.java:353)
>         at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
>         at org.apache.hadoop.mapred.Child.main(Child.java:249)
> Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException:
> test.giraph.SimpleShortestPathsVertex$SimpleShortestPathsVertexOutputFormat
>         at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:867)
>         at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:891)
>         ... 9 more
> Caused by: java.lang.ClassNotFoundException:
> test.giraph.SimpleShortestPathsVertex$SimpleShortestPathsVertexOutputFormat
>         at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>     at java.lang.Class.forName0(Native Method)
>     at java.lang.Class.forName(Class.java:247)
>     at
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
>     at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:865)
>     ... 10 more
>
>
>
> I have checked inside the test/giraph folder of the test.jar file. It
> contains the class
> SimpleShortestPathsVertex$SimpleShortestPathsVertexOutputFormat.
> Any help will be appreciated.
>
> Regards,
> Kaushik
>



-- 
martin

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