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https://jira.codehaus.org/browse/MPIR-247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=358747#comment-358747
]
Michael Osipov commented on MPIR-247:
-------------------------------------
There is no way to fix this issue in MPIR. The only way will be to upgrade to
3.2.4. What I'll do in time is after the 3.2.4 release, I'll catch that
exception and signal to the user that he should upgrade to Maven 3.2.4.
> "Comparison method violates its general contract!" while generating site
> ------------------------------------------------------------------------
>
> Key: MPIR-247
> URL: https://jira.codehaus.org/browse/MPIR-247
> Project: Maven Project Info Reports Plugin
> Issue Type: Bug
> Components: dependency-management
> Affects Versions: 2.4
> Environment: java version "1.7.0_04"
> Java(TM) SE Runtime Environment (build 1.7.0_04-b20)
> Java HotSpot(TM) 64-Bit Server VM (build 23.0-b21, mixed mode)
> maven 3.0.4
> Reporter: Mirek Hankus
>
> While generating site, I'm getting exception as follows.
> {code}
> message : Failed to execute goal
> org.apache.maven.plugins:maven-site-plugin:3.1:site (default-site) on project
> netpr-aggregator: Execution default-site of goal
> org.apache.maven.plugins:maven-site-plugin:3.1:site failed: Comparison method
> violates its general contract!
> cause : Execution default-site of goal
> org.apache.maven.plugins:maven-site-plugin:3.1:site failed: Comparison method
> violates its general contract!
> Stack trace :
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
> goal org.apache.maven.plugins:maven-site-plugin:3.1:site (default-site) on
> project netpr-aggregator: Execution default-site of goal
> org.apache.maven.plugins:maven-site-plugin:3.1:site failed: Comparison method
> violates its general contract!
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225)
> 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:84)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
> at
> org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
> at
> org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
> at
> org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:79)
> 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:601)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:329)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
> at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:158)
> at hudson.maven.Maven3Builder.call(Maven3Builder.java:98)
> at hudson.maven.Maven3Builder.call(Maven3Builder.java:64)
> at hudson.remoting.UserRequest.perform(UserRequest.java:118)
> at hudson.remoting.UserRequest.perform(UserRequest.java:48)
> at hudson.remoting.Request$2.run(Request.java:326)
> at
> hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
> Caused by: org.apache.maven.plugin.PluginExecutionException: Execution
> default-site of goal org.apache.maven.plugins:maven-site-plugin:3.1:site
> failed: Comparison method violates its general contract!
> at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
> ... 27 more
> Caused by: java.lang.IllegalArgumentException: Comparison method violates its
> general contract!
> at java.util.ComparableTimSort.mergeHi(ComparableTimSort.java:835)
> at java.util.ComparableTimSort.mergeAt(ComparableTimSort.java:453)
> at java.util.ComparableTimSort.mergeCollapse(ComparableTimSort.java:376)
> at java.util.ComparableTimSort.sort(ComparableTimSort.java:182)
> at java.util.ComparableTimSort.sort(ComparableTimSort.java:146)
> at java.util.Arrays.sort(Arrays.java:472)
> at java.util.Collections.sort(Collections.java:155)
> at
> org.apache.maven.report.projectinfo.dependencies.renderer.DependencyManagementRenderer.getDependencyRow(DependencyManagementRenderer.java:228)
> at
> org.apache.maven.report.projectinfo.dependencies.renderer.DependencyManagementRenderer.renderDependenciesForScope(DependencyManagementRenderer.java:204)
> at
> org.apache.maven.report.projectinfo.dependencies.renderer.DependencyManagementRenderer.renderDependenciesForAllScopes(DependencyManagementRenderer.java:153)
> at
> org.apache.maven.report.projectinfo.dependencies.renderer.DependencyManagementRenderer.renderSectionProjectDependencies(DependencyManagementRenderer.java:146)
> at
> org.apache.maven.report.projectinfo.dependencies.renderer.DependencyManagementRenderer.renderBody(DependencyManagementRenderer.java:132)
> at
> org.apache.maven.reporting.AbstractMavenReportRenderer.render(AbstractMavenReportRenderer.java:79)
> at
> org.apache.maven.report.projectinfo.DependencyManagementReport.executeReport(DependencyManagementReport.java:116)
> at
> org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:190)
> at
> org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:219)
> at
> org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:319)
> at
> org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:135)
> at
> org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:175)
> at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:138)
> at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
> ... 28 more
> {code}
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