Right. Don't run mvn eclipse:eclipse. Remove your .classpath/.project/.settings completely. Go to File->Import->Existing Maven Project and use the top-level Mahout checkout. This does a complete job except for the two things missing in the pom. I ignore that error. The most I do in Eclipse is run unit tests, which can run the bin/mahout jobs.
----- Original Message ----- | From: "Marty Kube" <[email protected]> | To: [email protected] | Sent: Tuesday, November 27, 2012 4:23:40 PM | Subject: Re: Mahout With Eclipse problems | | Hi Bruce, | | To create the eclipse project, I'm guessing that you ran: | | mvn eclipse:eclipse | | | I have the m2eclispe and subeclipse plugins installed. I did a check | out as maven project instead of checkout and generating the project. | | Do you have m2eclipse installed? I see that there are some conflicts | between generating the project with maven and using m2eclipse. | | https://bugs.eclipse.org/bugs/show_bug.cgi?id=394042 | | | | On 11/26/2012 07:57 PM, Bruce Williams wrote: | > I had this problem. I ran mvn in the Mahout root directory to | > create | > an eclipse project that loaded and compiled with no errors. | > | > On Mon, Nov 26, 2012 at 7:16 PM, Marty Kube | > <[email protected]> wrote: | >> Sorry, I couldn't figure out how to reply to the original thread: | >> | >> http://mail-archives.apache.org/mod_mbox/mahout-user/201211.mbox/%3CCAMBwUE4WyE8YcXxxTAdDvNzP_UdYW9GyiSAd%3DJnztuDXCtuJuQ%40mail.gmail.com%3E | >> | >> I'm having the same issue. The final recommendation of doing a | >> better job | >> of configuring eclispe is not working out. I'm getting an error | >> in the | >> m2eclispse plug-in. The eclipse error log has this stack trace | >> shown below. | >> See the screen shot link below as well. I think this is a | >> m2eclipse issue. | >> I'll try to raise it over there. | >> | >> Screen shot: | >> | >> http://beavercreekconsulting.com/img/eclipse-mahout-m2eclipse-trouble.png | >> | >> Message: Problems occurred when invoking code from plug-in: | >> "org.eclipse.jface". | >> | >> Java.lang.NullPointerException | >> at | >> org.eclipse.m2e.core.ui.internal.preferences.LifecycleMappingsViewer.setTarget(LifecycleMappingsViewer.java:553) | >> at | >> org.eclipse.m2e.core.ui.internal.preferences.LifecycleMappingPropertyPage.setElement(LifecycleMappingPropertyPage.java:45) | >> at | >> org.eclipse.ui.internal.dialogs.RegistryPageContributor.createPage(RegistryPageContributor.java:166) | >> at | >> org.eclipse.ui.internal.dialogs.PropertyPageNode.createPage(PropertyPageNode.java:56) | >> at | >> org.eclipse.jface.preference.PreferenceDialog.createPage(PreferenceDialog.java:1340) | >> at | >> org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.createPage(FilteredPreferenceDialog.java:377) | >> at | >> org.eclipse.jface.preference.PreferenceDialog.showPage(PreferenceDialog.java:1231) | >> at | >> org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredPreferenceDialog.java:675) | >> at | >> org.eclipse.jface.preference.PreferenceDialog$10.run(PreferenceDialog.java:709) | >> at | >> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) | >> at | >> org.eclipse.jface.preference.PreferenceDialog$9.selectionChanged(PreferenceDialog.java:705) | >> at | >> org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:888) | >> at | >> org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) | >> at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49) | >> at | >> org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175) | >> at | >> org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:886) | >> at | >> org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1226) | >> at | >> org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1251) | >> at | >> org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:262) | >> at | >> org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:256) | >> at | >> org.eclipse.jface.util.OpenStrategy$3.run(OpenStrategy.java:433) | >> at | >> org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) | >> at | >> org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135) | >> at | >> org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3529) | >> at | >> org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3182) | >> at | >> org.eclipse.jface.window.Window.runEventLoop(Window.java:825) | >> at org.eclipse.jface.window.Window.open(Window.java:801) | >> at | >> org.eclipse.ui.dialogs.PropertyDialogAction.run(PropertyDialogAction.java:158) | >> at | >> org.eclipse.jface.action.Action.runWithEvent(Action.java:498) | >> at | >> org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584) | >> at | >> org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501) | >> at | >> org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411) | >> at | >> org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) | >> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1276) | >> at | >> org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3554) | >> at | >> org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3179) | >> at | >> org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1029) | >> at | >> org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) | >> at | >> org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:923) | >> at | >> org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86) | >> at | >> org.eclipse.ui.internal.Workbench$5.run(Workbench.java:588) | >> at | >> org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) | >> at | >> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543) | >> at | >> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) | >> at | >> org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124) | >> at | >> org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) | >> at | >> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) | >> at | >> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) | >> at | >> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353) | >> at | >> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180) | >> 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.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629) | >> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584) | >> at org.eclipse.equinox.launcher.Main.run(Main.java:1438) | >> at org.eclipse.equinox.launcher.Main.main(Main.java:1414) | >> | >> | >> | > | > | |
