NullPointerException in maven-resources-plugin
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Key: MRESOURCES-149
URL: https://jira.codehaus.org/browse/MRESOURCES-149
Project: Maven 2.x Resources Plugin
Issue Type: Bug
Components: copy
Affects Versions: 2.5, 2.4.3
Environment: centos 5.x
maven 3.0.3
TeamCity Enterprise Version 6.5.2 (build 17935)
Java(TM) SE Runtime Environment (build 1.6.0_21-b06)
Java HotSpot(TM) 64-Bit Server VM (build 17.0-b16, mixed mode)
Reporter: Eran Harel
About twice a day we get a NullPointerException in our build:
{code}
[06:44:23]: [ERROR] Failed to execute goal
org.apache.maven.plugins:maven-resources-plugin:2.5:resources
(default-resources) on project spring-lib: Execution default-resources of goal
org.apache.maven.plugins:maven-resources-plugin:2.5:resources failed.
NullPointerException -> [Help 1]
[06:44:23]: org.apache.maven.lifecycle.LifecycleExecutionException: Failed to
execute goal org.apache.maven.plugins:maven-resources-plugin:2.5:resources
(default-resources) on project spring-lib: Execution default-resources of goal
org.apache.maven.plugins:maven-resources-plugin:2.5:resources failed.
[06:44:23]: at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225)
[06:44:23]: at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
[06:44:23]: at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
[06:44:23]: at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
[06:44:23]: at
org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:167)
[06:44:23]: at
org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:164)
[06:44:23]: at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
[06:44:23]: at java.util.concurrent.FutureTask.run(FutureTask.java:138)
[06:44:23]: at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
[06:44:23]: at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
[06:44:23]: at java.util.concurrent.FutureTask.run(FutureTask.java:138)
[06:44:23]: at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
[06:44:23]: at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
[06:44:23]: at java.lang.Thread.run(Thread.java:619)
[06:44:23]: Caused by: org.apache.maven.plugin.PluginExecutionException:
Execution default-resources of goal
org.apache.maven.plugins:maven-resources-plugin:2.5:resources failed.
[06:44:23]: at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
[06:44:23]: at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
[06:44:23]: ... 13 more
[06:44:23]: Caused by: java.lang.NullPointerException
[06:44:23]: at java.util.ArrayList.<init>(ArrayList.java:131)
[06:44:23]: at
org.apache.maven.shared.filtering.DefaultMavenResourcesFiltering.filteredFileExtension(DefaultMavenResourcesFiltering.java:115)
[06:44:23]: at
org.apache.maven.shared.filtering.DefaultMavenResourcesFiltering.filterResources(DefaultMavenResourcesFiltering.java:264)
[06:44:23]: at
org.apache.maven.plugin.resources.ResourcesMojo.execute(ResourcesMojo.java:310)
[06:44:23]: at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
[06:44:23]: ... 14 more
{code}
This comes at random times, and the next build doesn't fail.
I've googled for this failure and found nothing. I have this gut feeling that
this may be caused by a concurrency issue in the maven-resources-plugin.
We got this error with maven-resources-plugin 2.4.3, and now with 2.5. Our
maven version is 3.0.3.
We execute the build on TeamCity with the following parameters:
{code}
Goals: install
Additional Maven command line parameters: -T 2C -e -P!releasex,integration
-Dmaven.test.failure.ignore=true -Dmaven.test.error.ignore=true
-Dmaven.test.haltafterfailure=false -Dmaven.junit.timeout=1000000
-DwarProject.packaging=jar
{code}
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