Question

My project started to fail during the execution of mvn site:site since I updated the maven-surefire-report-plugin to version 2.8, which was just released a week or so ago.

Here is the exception:

[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] org.apache.maven.doxia.siterenderer.sink.SiteRendererSink.unknown(Ljava/lang/String;[Ljava/lang/Object;Lorg/apache/maven/doxia/sink/SinkEventAttributes;)V
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.AbstractMethodError: org.apache.maven.doxia.siterenderer.sink.SiteRendererSink.unknown(Ljava/lang/String;[Ljava/lang/Object;Lorg/apache/maven/doxia/sink/SinkEventAttributes;)V
    at org.apache.maven.plugins.surefire.report.SurefireReportGenerator.doGenerateReport(SurefireReportGenerator.java:76)
    at org.apache.maven.plugins.surefire.report.SurefireReportMojo.executeReport(SurefireReportMojo.java:200)
    at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:190)
    at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:144)
    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 hudson.maven.agent.ComponentInterceptor.invoke(ComponentInterceptor.java:47)
    at hudson.maven.agent.PluginManagerInterceptor$3.invoke(PluginManagerInterceptor.java:229)
    at $Proxy7.generate(Unknown Source)
    at org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:139)
    at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:269)
    at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:101)
    at org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:133)
    at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:100)
    at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
    at hudson.maven.agent.PluginManagerInterceptor.executeMojo(PluginManagerInterceptor.java:182)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
    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.lifecycle.LifecycleExecutorInterceptor.execute(LifecycleExecutorInterceptor.java:65)
    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 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.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
    at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
    at hudson.maven.agent.Main.launch(Main.java:165)
    at hudson.maven.MavenBuilder.call(MavenBuilder.java:165)
    at hudson.maven.MavenModuleSetBuild$Builder.call(MavenModuleSetBuild.java:744)
    at hudson.maven.MavenModuleSetBuild$Builder.call(MavenModuleSetBuild.java:688)
    at hudson.remoting.UserRequest.perform(UserRequest.java:114)
    at hudson.remoting.UserRequest.perform(UserRequest.java:48)
    at hudson.remoting.Request$2.run(Request.java:270)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:619)

Here is the relevant section of my pom file:

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-surefire-report-plugin</artifactId>
  <version>2.8/version>
  <configuration>
    <argLine>-Xmx512m</argLine>
  </configuration>
</plugin>

Switching back to version 2.7.2 results in no error. Anyone knows more about this? Thanks.

Answer 1

From http://jira.codehaus.org/browse/SUREFIRE-714

As can be seen from
http://maven.apache.org/plugins/maven-surefire-report-plugin/

“Note: As of version 2.8 this plugin
requires Maven Site Plugin 2.1 or
higher to work properly. Version 2.7.2
and older are still compatible with
newer surefire versions, so mixing is
possible.”

For all practical purposes you can
stay on 2.7.2 as long as you want,
since the xml format used for
interchange will stay backward
compatible (newer surefire versions
can use older
surefire-report-plugins). You will, of
course, be missing out on bugfixes in
reporting if you choose to not upgrade
reporting-plugin/site.

If you don’t have the maven-site-plugin mentioned in your pom it won’t pull in the latest version. Add it as specified in http://maven.apache.org/plugins/maven-site-plugin/plugin-info.html