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Execution default-cli of goal com.github.ferstl:depgraph-maven-plugin:3.3.1:graph failed.: ConcurrentModificationException

See original GitHub issue

[ERROR] Failed to execute goal com.github.ferstl:depgraph-maven-plugin:3.3.1:graph (default-cli) on project my-project-server: Execution default-cli of goal com.github.ferstl:depgraph-maven-plugin:3.3.1:gr aph failed.: ConcurrentModificationException -> [Help 1]

In debugging why the VSCode extension Maven for Java failed to load dependencies for one of the modules, I see that com.github.ferstl:depgraph-maven-plugin:3.3.1:graph is failing due to a ConcurrentModificationException being thrown at com.github.ferstl.depgraph.graph.text.TextGraphFormatter$TextGraphWriter.writeChildren (TextGraphFormatter.java:107). None of the other modules in my project hit this error - they all work.

Here (mavenUtils.ts:47) is the command that the Maven for Java extension runs when I click to expand the Dependencies list:

mvn com.github.ferstl:depgraph-maven-plugin:3.3.1:graph -DgraphFormat=text -DshowDuplicates -DshowConflicts -DshowVersions -DshowGroupIds -DoutputDirectory="c:\Users\jdoe\AppData\Roaming\Code\User\workspaceStorage\4e542b539f681445e91db13053cfaa49\vscjava.vscode-maven" -DoutputFileName="245be55e97920914a630bdba648cd222.deps.txt" -f "c:\src\my-project\server\pom.xml" -X

Detailed Error Logs

[ERROR] Failed to execute goal com.github.ferstl:depgraph-maven-plugin:3.3.1:graph (default-cli) on project my-project-server: Execution default-cli of goal com.github.ferstl:depgraph-maven-plugin:3.3.1:gr
aph failed.: ConcurrentModificationException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.github.ferstl:depgraph-maven-plugin:3.3.1:graph (default-cli) on project my-project-server: Execution default-cli of goal
com.github.ferstl:depgraph-maven-plugin:3.3.1:graph failed.
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-cli of goal com.github.ferstl:depgraph-maven-plugin:3.3.1:graph failed.
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:148)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: java.util.ConcurrentModificationException
    at java.util.ArrayList$Itr.checkForComodification (ArrayList.java:909)
    at java.util.ArrayList$Itr.next (ArrayList.java:859)
    at com.github.ferstl.depgraph.graph.text.TextGraphFormatter$TextGraphWriter.writeChildren (TextGraphFormatter.java:107)
    at com.github.ferstl.depgraph.graph.text.TextGraphFormatter$TextGraphWriter.writeChildren (TextGraphFormatter.java:119)
    at com.github.ferstl.depgraph.graph.text.TextGraphFormatter$TextGraphWriter.writeChildren (TextGraphFormatter.java:119)
    at com.github.ferstl.depgraph.graph.text.TextGraphFormatter$TextGraphWriter.writeChildren (TextGraphFormatter.java:119)
    at com.github.ferstl.depgraph.graph.text.TextGraphFormatter$TextGraphWriter.writeChildren (TextGraphFormatter.java:119)
    at com.github.ferstl.depgraph.graph.text.TextGraphFormatter$TextGraphWriter.write (TextGraphFormatter.java:79)
    at com.github.ferstl.depgraph.graph.text.TextGraphFormatter.format (TextGraphFormatter.java:41)
    at com.github.ferstl.depgraph.graph.GraphBuilder.toString (GraphBuilder.java:155)
    at com.github.ferstl.depgraph.dependency.SimpleGraphFactory.createGraph (SimpleGraphFactory.java:49)
    at com.github.ferstl.depgraph.AbstractGraphMojo.execute (AbstractGraphMojo.java:277)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)

Issue Analytics

  • State:closed
  • Created a year ago
  • Reactions:1
  • Comments:8 (3 by maintainers)

github_iconTop GitHub Comments

2reactions
tonjohncommented, Aug 4, 2022

After I did the following, I got it to work:

  • run mvn clean install from project root
  • restart VSCode

Sorry for the false alarm!

Edit: I’m a liar! Still having the issue. Not sure how I got it to work the one time…

0reactions
tonjohncommented, Aug 4, 2022

@ngrigoriev just confirmed that -DshowDuplicates is the source of the problem. Thanks for the tip!

@ferstl unfortunately the project is private and NDA limits what I can share 😢

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