NullPointerException in maven-resources-plugin

Details

Type: Bug
Status: Open
Priority: Major
Resolution: Unresolved
Affects Version/s: maven-filtering-1.0
Fix Version/s: None
Component/s: maven-filtering
Labels:
None
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)

Number of attachments :
0

Description

About twice a day we get a NullPointerException in our build:

[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

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:

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

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Michael Pilone added a comment - 20/Jan/12 2:18 PM

I'm seeing this issue as well with 2.4.3. It occurs randomly when doing a parallel build with Maven 3.x on JVM 1.6.

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Michael Pilone added a comment - 20/Jan/12 2:18 PM I'm seeing this issue as well with 2.4.3. It occurs randomly when doing a parallel build with Maven 3.x on JVM 1.6.

Dennis Lundberg made changes - 23/Feb/12 4:45 PM

Field	Original Value	New Value
Description	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}	About twice a day we get a NullPointerException in our build: {noformat} [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 {noformat} 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: {noformat} 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 {noformat}

Dennis Lundberg made changes - 23/Feb/12 4:47 PM

Project	Maven 2.x Resources Plugin [ 11145 ]	Maven Shared Components [ 11761 ]
Key	MRESOURCES-149	MSHARED-223
Affects Version/s		maven-filtering-1.0 [ 16231 ]
Affects Version/s	2.5 [ 16232 ]
Affects Version/s	2.4.3 [ 16471 ]
Component/s		maven-filtering [ 13380 ]
Component/s	copy [ 14618 ]

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Alexander Shabanov added a comment - 26/Jul/12 3:47 AM

I confirm that the issue reproduces on maven 3.0.4.
The stacktrace is as follows:

Execution checkstyle of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.4:checkstyle 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.MojoExecutor.executeForkedExecutions(MojoExecutor.java:365)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:199)
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.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
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.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution checkstyle of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.4:checkstyle failed.
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 23 more
Caused by: java.lang.NullPointerException
at org.apache.maven.plugin.checkstyle.rss.DefaultCheckstyleRssGenerator.generateRSS(DefaultCheckstyleRssGenerator.java:72)
at org.apache.maven.plugin.checkstyle.CheckstyleReport.executeReport(CheckstyleReport.java:639)
at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:131)
at org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:76)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
... 24 more

Hope this helps.

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Alexander Shabanov added a comment - 26/Jul/12 3:47 AM I confirm that the issue reproduces on maven 3.0.4. The stacktrace is as follows: Execution checkstyle of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.4:checkstyle 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.MojoExecutor.executeForkedExecutions(MojoExecutor.java:365) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:199) 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.apache.maven.cli.MavenCli.execute(MavenCli.java:537) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196) at org.apache.maven.cli.MavenCli.main(MavenCli.java:141) 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.launchEnhanced(Launcher.java:290) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352) Caused by: org.apache.maven.plugin.PluginExecutionException: Execution checkstyle of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.4:checkstyle failed. at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) ... 23 more Caused by: java.lang.NullPointerException at org.apache.maven.plugin.checkstyle.rss.DefaultCheckstyleRssGenerator.generateRSS(DefaultCheckstyleRssGenerator.java:72) at org.apache.maven.plugin.checkstyle.CheckstyleReport.executeReport(CheckstyleReport.java:639) at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:131) at org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:76) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) ... 24 more Hope this helps.

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Dennis Lundberg added a comment - 26/Jul/12 4:09 PM

Alexander,

You have a completely different NPE, that occurs in maven-checkstyle-plugin. I suggest that you upgrade to the latest version possible to see if it solved your issue.

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Dennis Lundberg added a comment - 26/Jul/12 4:09 PM Alexander, You have a completely different NPE, that occurs in maven-checkstyle-plugin. I suggest that you upgrade to the latest version possible to see if it solved your issue.

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Alexander Shabanov added a comment - 27/Jul/12 2:46 AM

Yes, you're right, upgrading to 2.6 solves the issue. Nevertheless 2.4 does not cause problem on maven 2.
Though this is probably a checkstyle issue.

Sorry for disturbance.

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Alexander Shabanov added a comment - 27/Jul/12 2:46 AM Yes, you're right, upgrading to 2.6 solves the issue. Nevertheless 2.4 does not cause problem on maven 2. Though this is probably a checkstyle issue. Sorry for disturbance.

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Assignee:

Unassigned

Reporter:

Eran Harel

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Dates

Created:

25/Jul/11 9:07 AM

Updated:

27/Jul/12 2:46 AM