Carsten Rohde created MDEP-833: ---------------------------------- Summary: dependency:properties parallel build NPE Key: MDEP-833 URL: https://issues.apache.org/jira/browse/MDEP-833 Project: Maven Dependency Plugin Issue Type: Bug Components: properties Affects Versions: 3.3.0 Environment: Windows 10, OpenJDK 8, Maven 3.8.6 Reporter: Carsten Rohde
In a huge multimodule project, I get an NPE when building in parallel (see stacktrace below). I've encountered a similar problem with the Antrun-Plugin before (see stacktrace below) which I was able to work around by attaching the execution to a later phase. The NPEs happen when accessing artifact#getFile which seems not to be present in early phases of parallel builds, so maybe this problem is down to how maven handles parallelism. In my case dependency:properties is attached to its default phase {{initialize}} dependency:properties {code:java} project.getProperties().setProperty( artifact.getDependencyConflictId(), artifact.getFile().getAbsolutePath() ); {code} [Permalink dependency-plugin|https://github.com/apache/maven-dependency-plugin/blob/673ef9f4d6d0119ea6dcf1b61134d1277720d3b5/src/main/java/org/apache/maven/plugins/dependency/PropertiesMojo.java#L81-L82] [Permalink antrun-plugin|https://github.com/apache/maven-antrun-plugin/blob/5ec09d7b6b1b64c26d05367837d60f98ed4e0db4/src/main/java/org/apache/maven/plugins/antrun/AntRunMojo.java#L474] Is there any workaround, I could try? *Stacktrace dependency:properties* {code:java} Execution default of goal org.apache.maven.plugins:maven-dependency-plugin:3.3.0:properties failed. at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:375) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163) at org.apache.maven.lifecycle.internal.MojoExecutor.executeForkedExecutions (MojoExecutor.java:508) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:345) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:210) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:195) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:511) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:624) at java.lang.Thread.run (Thread.java:748) Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default of goal org.apache.maven.plugins:maven-dependency-plugin:3.3.0:properties failed. at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:148) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163) at org.apache.maven.lifecycle.internal.MojoExecutor.executeForkedExecutions (MojoExecutor.java:508) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:345) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:210) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:195) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:511) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:624) at java.lang.Thread.run (Thread.java:748) Caused by: java.lang.NullPointerException at org.apache.maven.plugins.dependency.PropertiesMojo.execute (PropertiesMojo.java:82) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163) at org.apache.maven.lifecycle.internal.MojoExecutor.executeForkedExecutions (MojoExecutor.java:508) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:345) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:210) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:195) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:511) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:624) at java.lang.Thread.run (Thread.java:748) {code} *Stacktrace antrun:run* {code:java} Error executing Ant tasks: null at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:375) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:210) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:195) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:511) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:624) at java.lang.Thread.run (Thread.java:748) Caused by: org.apache.maven.plugin.MojoExecutionException: Error executing Ant tasks: null at org.apache.maven.plugins.antrun.AntRunMojo.execute (AntRunMojo.java:323) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:210) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:195) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:511) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:624) at java.lang.Thread.run (Thread.java:748) Caused by: java.lang.NullPointerException at org.apache.maven.plugins.antrun.AntRunMojo.copyProperties (AntRunMojo.java:474) at org.apache.maven.plugins.antrun.AntRunMojo.execute (AntRunMojo.java:294) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:210) at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:195) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:511) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:624) at java.lang.Thread.run (Thread.java:748) {code} -- This message was sent by Atlassian Jira (v8.20.10#820010)