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Bug
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Resolution: Fixed
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Minor
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None
While executing a maven build (maven 3.3.9) The build result is successful but we get a NullPointerException during the execution.
The net effects are these:
- The Last Successful Artifacts section is empty although the artifacts were generated and properly uploaded to nexus
- Build when SNAPSHOT dependencies are generated trigger does not work
The Null Pointer Exception disappears if the maven-javadoc-plugin ( 2.10.4 ) is disabled.
Actual plugin configuration (in the reports section of pom.xml) is as follows:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.10.4</version>
<configuration>
<aggregate>false</aggregate>
<show>public</show>
</configuration>
<reportSets>
<reportSet>
<reports>
<report>javadoc</report>
</reports>
</reportSet>
</reportSets>
</plugin>
The actual log of the null pointer exception is below:
[INFO] preparing maven-javadoc-plugin:javadoc report requires 'generate-sources' forked phase execution [jenkins-maven-event-spy] WARNING Exception processing org.apache.maven.lifecycle.internal.DefaultExecutionEvent@3f1158ee java.lang.NullPointerException: Attribute value can not be null at org.codehaus.plexus.util.xml.Xpp3Dom.setAttribute(Xpp3Dom.java:178) at org.jenkinsci.plugins.pipeline.maven.eventspy.handler.AbstractExecutionHandler._handle(AbstractExecutionHandler.java:99) at org.jenkinsci.plugins.pipeline.maven.eventspy.handler.AbstractExecutionHandler.handle(AbstractExecutionHandler.java:58) at org.jenkinsci.plugins.pipeline.maven.eventspy.JenkinsMavenEventSpy.onEvent(JenkinsMavenEventSpy.java:158) at org.apache.maven.eventspy.internal.EventSpyDispatcher.onEvent(EventSpyDispatcher.java:104) at org.apache.maven.eventspy.internal.EventSpyExecutionListener.forkStarted(EventSpyExecutionListener.java:96) at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire(DefaultExecutionEventCatapult.java:94) at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire(DefaultExecutionEventCatapult.java:42) at org.apache.maven.lifecycle.internal.MojoExecutor.executeForkedExecutions(MojoExecutor.java:315) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeForkedExecutions(DefaultLifecycleExecutor.java:173) at org.apache.maven.reporting.exec.DefaultMavenReportExecutor.prepareReportExecution(DefaultMavenReportExecutor.java:336) at org.apache.maven.reporting.exec.DefaultMavenReportExecutor.buildReportPlugin(DefaultMavenReportExecutor.java:186) at org.apache.maven.reporting.exec.DefaultMavenReportExecutor.buildMavenReports(DefaultMavenReportExecutor.java:151) at org.apache.maven.plugins.site.render.AbstractSiteRenderingMojo.getReports(AbstractSiteRenderingMojo.java:251) at org.apache.maven.plugins.site.render.SiteMojo.execute(SiteMojo.java:115) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288) at org.apache.maven.cli.MavenCli.main(MavenCli.java:199) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
