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 <[email protected]> > 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
