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https://jira.codehaus.org/browse/MPIR-247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=360614#comment-360614
]
Michael Osipov edited comment on MPIR-247 at 1/4/15 9:17 AM:
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The metadata file is far from being complete. Are you sure that it is already
sorted? I presumed the file contains versions as they are added. Not
necessarily sorted. E.g., 6.1.2, 6.2, 6.1.3, 6.2.1. Can this happen? Have a
look at
[this|http://repo.maven.apache.org/maven2/net/fckeditor/java-core/maven-metadata.xml]
example.
If this is negligible, I would throw away my branch and take your fix or turn
my exception into a {{log.error}}.
was (Author: michael-o):
The metadata file is far from being complete. Are you sure that it is already
sorted? I presumed the file contains versions as they are added. Not
necessarily sorted. E.g., 6.1.2, 6.2, 6.1.3, 6.2.1. Can this happen? Have a
[look|http://repo.maven.apache.org/maven2/net/fckeditor/java-core/maven-metadata.xml]
at this example.
If this is negligible, I would throw away my branch and take your fix or turn
my exception into a {{log.error}}.
> "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
> Assignee: Michael Osipov
> Fix For: 2.8
>
> Attachments: MPIR-247.zip
>
>
> 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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