[ https://jira.codehaus.org/browse/MNG-5493?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Scholte closed MNG-5493. ------------------------------- Resolution: Duplicate Assignee: Robert Scholte > Concurrency exception in Maven core while using parallel build > -------------------------------------------------------------- > > Key: MNG-5493 > URL: https://jira.codehaus.org/browse/MNG-5493 > Project: Maven > Issue Type: Bug > Components: Deployment, Errors, General, Plugins and Lifecycle > Affects Versions: 3.0.3, 3.0.5 > Reporter: Pengfei Zhang > Assignee: Robert Scholte > > My project uses parallel build for my "deployment" job in Hudson. From time > to time, the build failed because of the following > {{ConcurrencyModificationException}}. This apparently is not a plugin-in bug. > Instead, it is a deeper issue in the core. I checked the source code, I think > the "Properties" should be replaced by a concurrentHashMap. Accordingt to the > java doc of "Properties", it cannot support concurrency. > {noformat} > org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute > goal org.apache.maven.plugins:maven-assembly-plugin:2.4:single > (make-assembly) on project ssm-viewer-spread: Execution make-assembly of goal > org.apache.maven.plugins:maven-assembly-plugin:2.4:single failed. > 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.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:167) > at > org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:163) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) > at java.util.concurrent.FutureTask.run(FutureTask.java:166) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) > at java.util.concurrent.FutureTask.run(FutureTask.java:166) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > at java.lang.Thread.run(Thread.java:722) > Caused by: org.apache.maven.plugin.PluginExecutionException: Execution > make-assembly of goal > org.apache.maven.plugins:maven-assembly-plugin:2.4:single failed. > at > org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110) > at > org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) > ... 13 more > Caused by: java.util.ConcurrentModificationException > at java.util.Hashtable$Enumerator.next(Hashtable.java:1200) > at java.util.Hashtable.putAll(Hashtable.java:614) > at > org.apache.maven.project.DefaultProjectBuildingRequest.setSystemProperties(DefaultProjectBuildingRequest.java:166) > at > org.apache.maven.project.DefaultMavenProjectBuilder.toRequest(DefaultMavenProjectBuilder.java:79) > at > org.apache.maven.project.DefaultMavenProjectBuilder.buildFromRepository(DefaultMavenProjectBuilder.java:229) > at > org.apache.maven.project.DefaultMavenProjectBuilder.buildFromRepository(DefaultMavenProjectBuilder.java:251) > at > org.apache.maven.project.DefaultMavenProjectBuilder.buildFromRepository(DefaultMavenProjectBuilder.java:258) > at > org.apache.maven.plugin.assembly.archive.task.AddDependencySetsTask.addDependencySet(AddDependencySetsTask.java:162) > at > org.apache.maven.plugin.assembly.archive.task.AddDependencySetsTask.execute(AddDependencySetsTask.java:124) > at > org.apache.maven.plugin.assembly.archive.phase.DependencySetAssemblyPhase.execute(DependencySetAssemblyPhase.java:76) > at > org.apache.maven.plugin.assembly.archive.DefaultAssemblyArchiver.createArchive(DefaultAssemblyArchiver.java:183) > at > org.apache.maven.plugin.assembly.mojos.AbstractAssemblyMojo.execute(AbstractAssemblyMojo.java:436) > at org.apache.maven > {noformat} -- This message was sent by Atlassian JIRA (v6.1.6#6162)