Did you do [mvn -DskipTests install] at the top level before trying this? On Tue, Sep 21, 2010 at 9:15 AM, Neil Ghosh <[email protected]> wrote:
> Hi , > > I am trying to run the example using Mahout 0.3 at > https://cwiki.apache.org/confluence/display/MAHOUT/Twenty+Newsgroups > > I have carried out all the steps but getting build error during this > command > > mvn -e exec:java \ > > -Dexec.mainClass=org.apache.mahout.classifier.bayes.PrepareTwentyNewsgroups > \ > -Dexec.args="-p 20news-18828 \ > -o 20news-input \ > -a org.apache.lucene.analysis.standard.StandardAnalyzer \ > -c UTF-8" > > > Please help, getting the following error. > > n...@neil-laptop:~/workspace/mahout-0.3/examples$ mvn -e exec:java \ > > > -Dexec.mainClass=org.apache.mahout.classifier.bayes.PrepareTwentyNewsgroups > \ > > -Dexec.args="-p 20news-18828 \ > > -o 20news-input \ > > -a > org.apache.lucene.analysis.standard.StandardAnalyzer > \ > > -c UTF-8" > + Error stacktraces are turned on. > [INFO] Scanning for projects... > [INFO] Searching repository for plugin with prefix: 'exec'. > [INFO] > ------------------------------------------------------------------------ > [INFO] Building Mahout Examples > [INFO] task-segment: [exec:java] > [INFO] > ------------------------------------------------------------------------ > [INFO] Preparing exec:java > [INFO] No goals needed for project - skipping > [INFO] [exec:java {execution: default-cli}] > [INFO] > ------------------------------------------------------------------------ > [ERROR] BUILD ERROR > [INFO] > ------------------------------------------------------------------------ > [INFO] An exception occured while executing the Java class. null > > Unresolved compilation problems: > DefaultOptionCreator cannot be resolved > CommandLineUtil cannot be resolved > BayesFileFormatter cannot be resolved > CommandLineUtil cannot be resolved > > [INFO] > ------------------------------------------------------------------------ > [INFO] Trace > org.apache.maven.lifecycle.LifecycleExecutionException: An exception > occured > while executing the Java class. null > at > > org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719) > at > > org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:569) > at > > org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:539) > at > > org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387) > at > > org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348) > at > > org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180) > at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328) > at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138) > at org.apache.maven.cli.MavenCli.main(MavenCli.java:362) > at > org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) > at > > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:616) > at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) > at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) > at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) > at org.codehaus.classworlds.Launcher.main(Launcher.java:375) > Caused by: org.apache.maven.plugin.MojoExecutionException: An exception > occured while executing the Java class. null > at org.codehaus.mojo.exec.ExecJavaMojo.execute(ExecJavaMojo.java:346) > at > > org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490) > at > > org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694) > ... 17 more > Caused by: java.lang.reflect.InvocationTargetException > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) > at > > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:616) > at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:291) > at java.lang.Thread.run(Thread.java:636) > Caused by: java.lang.Error: Unresolved compilation problems: > DefaultOptionCreator cannot be resolved > CommandLineUtil cannot be resolved > BayesFileFormatter cannot be resolved > CommandLineUtil cannot be resolved > > at > > org.apache.mahout.classifier.bayes.PrepareTwentyNewsgroups.main(PrepareTwentyNewsgroups.java:52) > ... 6 more > [INFO] > ------------------------------------------------------------------------ > [INFO] Total time: 3 seconds > [INFO] Finished at: Tue Sep 21 21:41:25 IST 2010 > [INFO] Final Memory: 14M/34M > [INFO] > ------------------------------------------------------------------------ > > > > -- > Thanks and Regards > Neil > http://neilghosh.com >
