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Re: [m2e-users] please test m2e 1.1M7 
I've opened bug 380096 [1] to track this problem and expect to have the
fix in RC1.

[1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=380096

--
Regards,
Igor

On 12-05-15 10:02 PM, Stephen Coy wrote:

Hi there,

I've been testing this build on our large multi-module project and occasionally I'll get a whole bunch of NullPointerExceptions:

!SUBENTRY 1 org.eclipse.m2e.core 4 75 2012-05-16 11:27:43.973
!MESSAGE Errors running builder 'Maven Project Builder' on project 'axelerator-demonstration-services'.
!STACK 0
java.lang.NullPointerException
        at org.eclipse.m2e.core.internal.markers.SourceLocationHelper.findLocation(SourceLocationHelper.java:92)
        at org.eclipse.m2e.core.internal.lifecyclemapping.LifecycleMappingFactory.instantiateProjectConfigurators(LifecycleMappingFactory.java:606)
        at org.eclipse.m2e.core.internal.lifecyclemapping.LifecycleMappingFactory.getProjectConfigurators(LifecycleMappingFactory.java:1172)
        at org.eclipse.m2e.core.project.configurator.AbstractCustomizableLifecycleMapping.getProjectConfigurators(AbstractCustomizableLifecycleMapping.java:106)
        at org.eclipse.m2e.core.project.configurator.AbstractCustomizableLifecycleMapping.getBuildParticipants(AbstractCustomizableLifecycleMapping.java:49)
        at org.eclipse.m2e.core.internal.builder.MavenBuilder.clean(MavenBuilder.java:153)
        at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:730)
        at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
        at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
        at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
        at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
        at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
        at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
        at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
        at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
        at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:513)
        at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:422)
        at org.eclipse.ui.internal.ide.dialogs.CleanDialog.doClean(CleanDialog.java:304)
        at org.eclipse.ui.internal.ide.dialogs.CleanDialog$1.runInWorkspace(CleanDialog.java:151)
        at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

This happens once for each project.

The general sequence of events is that I :

1. Run
	mvn clean install
    from the command line;

2. Refresh the eclipse workspace;

3. Project/Clean...
	* Clean all projects
	X Start a build immediately
		Build the entire workspace

The workspace contains around 80 projects or so fwiw.

Restarting Eclipse seems to fix it.

Cheers,

Steve C



On 08/05/2012, at 2:39 AM, Igor Fedorenko wrote:


I've uploaded m2e 1.1 M7 to m2e milestone release repository [1]. This
is the first milestone to include maven 3.0.4 as the default embedded
runtime so pay attention to differences in dependency resolution, memory
footprint and other maven-related oddities. FWIW, I've been using the
new embedder for last few weeks without any problems I was able to track
to the new embedder.

[1] http://download.eclipse.org/technology/m2e/milestones/1.1

--
Regards,
Igor
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