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Posted to issues@maven.apache.org by "Mirek Hankus (JIRA)" <ji...@codehaus.org> on 2012/07/07 13:34:21 UTC
[jira] (MPIR-247) "Comparison method violates its general
contract!" while generating site
Mirek Hankus created MPIR-247:
---------------------------------
Summary: "Comparison method violates its general contract!" while generating site
Key: MPIR-247
URL: https://jira.codehaus.org/browse/MPIR-247
Project: Maven 2.x Project Info Reports Plugin
Issue Type: Bug
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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[jira] (MPIR-247) "Comparison method violates its general
contract!" while generating site
Posted by "Herve Boutemy (JIRA)" <ji...@codehaus.org>.
[ https://jira.codehaus.org/browse/MPIR-247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=305884#comment-305884 ]
Herve Boutemy commented on MPIR-247:
------------------------------------
can you provide a sample project showing the problem?
> "Comparison method violates its general contract!" while generating site
> ------------------------------------------------------------------------
>
> Key: MPIR-247
> URL: https://jira.codehaus.org/browse/MPIR-247
> Project: Maven 2.x Project Info Reports Plugin
> Issue Type: Bug
> 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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[jira] (MPIR-247) "Comparison method violates its general
contract!" while generating site
Posted by "Milos Kleint (JIRA)" <ji...@codehaus.org>.
[ https://jira.codehaus.org/browse/MPIR-247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=320276#comment-320276 ]
Milos Kleint commented on MPIR-247:
-----------------------------------
related is this netbeans issue: http://netbeans.org/bugzilla/show_bug.cgi?id=226100
we use maven's ComparableVersion for sorting the nexus indexer results. It keeps on popping here and there, only with jdk 1.7. It would be probably easier to dump the dependency info in DependencyManagementRenderer than our code (the result can contain thousands of items, dependency list will be shorter).
I've never got hold of a reproducible scenario.
> "Comparison method violates its general contract!" while generating site
> ------------------------------------------------------------------------
>
> Key: MPIR-247
> URL: https://jira.codehaus.org/browse/MPIR-247
> Project: Maven 2.x Project Info Reports Plugin
> Issue Type: Bug
> 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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