[
https://jira.codehaus.org/browse/MNG-5307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=312054#comment-312054
]
Tibor Digana commented on MNG-5307:
-----------------------------------
I have the same observations with Maven 3.0.3.
Project executing in parallel -T 2C.
My project crashed on aggregator.
Does it mean that some variables are thread-unsafe?
[exec] [ERROR] Internal error: java.lang.NullPointerException -> [Help 1]
[exec] org.apache.maven.InternalErrorException: Internal error:
java.lang.NullPointerException
[exec] at
org.apache.maven.lifecycle.internal.BuilderCommon.handleBuildError(BuilderCommon.java:128)
[exec] at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:95)
[exec] at
org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:167)
[exec] at
org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:164)
[exec] at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
[exec] at java.util.concurrent.FutureTask.run(FutureTask.java:138)
[exec] at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
[exec] at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
[exec] at java.util.concurrent.FutureTask.run(FutureTask.java:138)
[exec] at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
[exec] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
[exec] at java.lang.Thread.run(Thread.java:662)
[exec] Caused by: java.lang.NullPointerException
[exec] at
org.apache.maven.plugin.internal.DefaultMavenPluginManager.calcImports(DefaultMavenPluginManager.java:406)
[exec] at
org.apache.maven.plugin.internal.DefaultMavenPluginManager.setupPluginRealm(DefaultMavenPluginManager.java:302)
[exec] at
org.apache.maven.plugin.DefaultBuildPluginManager.getPluginRealm(DefaultBuildPluginManager.java:175)
[exec] at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:78)
[exec] at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
[exec] at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
[exec] at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
[exec] at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
[exec] ... 10 more
> NPE during resolution of dependencies - parallel mode
> -----------------------------------------------------
>
> Key: MNG-5307
> URL: https://jira.codehaus.org/browse/MNG-5307
> Project: Maven 2 & 3
> Issue Type: Bug
> Components: Dependencies
> Affects Versions: 3.0.4
> Environment: Linux, IBM JVM 1.6, Builder is Atlassian Bamboo 2.7.6
> Reporter: Jeroen Benckhuijsen
>
> When building a project for the first time, maven fails with an internal NPE
> (see stacktrace below). This happens in case the first build is a parallel
> build (-T 5C), regardless for the actual goal (install, deploy,..). When the
> build is first run without -T, subsequent builds run without any issues.
> Given the code in
> http://svn.apache.org/viewvc/maven/maven-3/tags/maven-3.0.4/maven-core/src/main/java/org/apache/maven/lifecycle/internal/MojoExecutor.java?revision=1232336&view=markup
> projectToResolve seems to be null, which seems to be a MavenSession problem
> (just guessing here).
> Stacktrace:
> 5-Jul-2012 01:03:50 [INFO] BUILD FAILURE
> 05-Jul-2012 01:03:50 [INFO]
> ------------------------------------------------------------------------
> 05-Jul-2012 01:03:50 [INFO] Total time: 13.424s (Wall Clock)
> 05-Jul-2012 01:03:50 [INFO] Finished at: Thu Jul 05 01:03:50 CEST 2012
> 05-Jul-2012 01:03:50 [INFO] Final Memory: 107M/361M
> 05-Jul-2012 01:03:50 [INFO]
> ------------------------------------------------------------------------
> 05-Jul-2012 01:03:50 [ERROR] Internal error: java.lang.NullPointerException
> -> [Help 1]
> 05-Jul-2012 01:03:50 org.apache.maven.InternalErrorException: Internal
> error: java.lang.NullPointerException
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.BuilderCommon.handleBuildError(BuilderCommon.java:128)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:95)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:167)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:163)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:315)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask.run(FutureTask.java:150)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:453)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:315)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask.run(FutureTask.java:150)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:898)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:920)
> 05-Jul-2012 01:03:50 at java.lang.Thread.run(Thread.java:736)
> 05-Jul-2012 01:03:50 Caused by: java.lang.NullPointerException
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved(MojoExecutor.java:289)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:201)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
> 05-Jul-2012 01:03:50 ... 10 more
> 05-Jul-2012 01:03:50 [ERROR] Internal error: java.lang.NullPointerException
> -> [Help 1]
> 05-Jul-2012 01:03:50 org.apache.maven.InternalErrorException: Internal
> error: java.lang.NullPointerException
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.BuilderCommon.handleBuildError(BuilderCommon.java:128)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:95)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:167)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:163)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:315)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask.run(FutureTask.java:150)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:453)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:315)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask.run(FutureTask.java:150)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:898)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:920)
> 05-Jul-2012 01:03:50 at java.lang.Thread.run(Thread.java:736)
> 05-Jul-2012 01:03:50 Caused by: java.lang.NullPointerException
> 05-Jul-2012 01:03:50 at
> org.apache.maven.plugin.internal.DefaultMavenPluginManager.calcImports(DefaultMavenPluginManager.java:406)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.plugin.internal.DefaultMavenPluginManager.setupPluginRealm(DefaultMavenPluginManager.java:302)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.plugin.DefaultBuildPluginManager.getPluginRealm(DefaultBuildPluginManager.java:175)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:78)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
> 05-Jul-2012 01:03:50 ... 10 more
> 05-Jul-2012 01:03:50 [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-install-plugin:2.3.1:install (default-install)
> on project domainservices: Failed to install metadata
> nl.apg.gps:domainservices:2012.2.1.0-SNAPSHOT/maven-metadata.xml: Could not
> read metadata
> /var/maven/repo3/nl/apg/gps/domainservices/2012.2.1.0-SNAPSHOT/maven-metadata-local.xml:
> input contained no data -> [Help 2]
> 05-Jul-2012 01:03:50 org.apache.maven.lifecycle.LifecycleExecutionException:
> Failed to execute goal
> org.apache.maven.plugins:maven-install-plugin:2.3.1:install (default-install)
> on project domainservices: Failed to install metadata
> nl.apg.gps:domainservices:2012.2.1.0-SNAPSHOT/maven-metadata.xml: Could not
> read metadata
> /var/maven/repo3/nl/apg/gps/domainservices/2012.2.1.0-SNAPSHOT/maven-metadata-local.xml:
> input contained no data
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:167)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:163)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:315)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask.run(FutureTask.java:150)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:453)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:315)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.FutureTask.run(FutureTask.java:150)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:898)
> 05-Jul-2012 01:03:50 at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:920)
> 05-Jul-2012 01:03:50 at java.lang.Thread.run(Thread.java:736)
> 05-Jul-2012 01:03:50 Caused by:
> org.apache.maven.plugin.MojoExecutionException: Failed to install metadata
> nl.apg.gps:domainservices:2012.2.1.0-SNAPSHOT/maven-metadata.xml: Could not
> read metadata
> /var/maven/repo3/nl/apg/gps/domainservices/2012.2.1.0-SNAPSHOT/maven-metadata-local.xml:
> input contained no data
> 05-Jul-2012 01:03:50 at
> org.apache.maven.plugin.install.InstallMojo.execute(InstallMojo.java:139)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
> 05-Jul-2012 01:03:50 ... 13 more
> 05-Jul-2012 01:03:50 Caused by:
> org.apache.maven.artifact.installer.ArtifactInstallationException: Failed to
> install metadata
> nl.apg.gps:domainservices:2012.2.1.0-SNAPSHOT/maven-metadata.xml: Could not
> read metadata
> /var/maven/repo3/nl/apg/gps/domainservices/2012.2.1.0-SNAPSHOT/maven-metadata-local.xml:
> input contained no data
> 05-Jul-2012 01:03:50 at
> org.apache.maven.artifact.installer.DefaultArtifactInstaller.install(DefaultArtifactInstaller.java:111)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.plugin.install.InstallMojo.execute(InstallMojo.java:89)
> 05-Jul-2012 01:03:50 ... 15 more
> 05-Jul-2012 01:03:50 Caused by:
> org.sonatype.aether.installation.InstallationException: Failed to install
> metadata nl.apg.gps:domainservices:2012.2.1.0-SNAPSHOT/maven-metadata.xml:
> Could not read metadata
> /var/maven/repo3/nl/apg/gps/domainservices/2012.2.1.0-SNAPSHOT/maven-metadata-local.xml:
> input contained no data
> 05-Jul-2012 01:03:50 at
> org.sonatype.aether.impl.internal.DefaultInstaller.install(DefaultInstaller.java:313)
> 05-Jul-2012 01:03:50 at
> org.sonatype.aether.impl.internal.DefaultInstaller.install(DefaultInstaller.java:211)
> 05-Jul-2012 01:03:50 at
> org.sonatype.aether.impl.internal.DefaultInstaller.install(DefaultInstaller.java:158)
> 05-Jul-2012 01:03:50 at
> org.sonatype.aether.impl.internal.DefaultRepositorySystem.install(DefaultRepositorySystem.java:436)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.artifact.installer.DefaultArtifactInstaller.install(DefaultArtifactInstaller.java:107)
> 05-Jul-2012 01:03:50 ... 16 more
> 05-Jul-2012 01:03:50 Caused by: org.sonatype.aether.RepositoryException:
> Could not read metadata
> /var/maven/repo3/nl/apg/gps/domainservices/2012.2.1.0-SNAPSHOT/maven-metadata-local.xml:
> input contained no data
> 05-Jul-2012 01:03:50 at
> org.apache.maven.repository.internal.MavenMetadata.read(MavenMetadata.java:101)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.repository.internal.MavenMetadata.merge(MavenMetadata.java:69)
> 05-Jul-2012 01:03:50 at
> org.sonatype.aether.impl.internal.DefaultInstaller.install(DefaultInstaller.java:301)
> 05-Jul-2012 01:03:50 ... 20 more
> 05-Jul-2012 01:03:50 Caused by: java.io.EOFException: input contained no data
> 05-Jul-2012 01:03:50 at
> org.codehaus.plexus.util.xml.pull.MXParser.fillBuf(MXParser.java:3005)
> 05-Jul-2012 01:03:50 at
> org.codehaus.plexus.util.xml.pull.MXParser.more(MXParser.java:3048)
> 05-Jul-2012 01:03:50 at
> org.codehaus.plexus.util.xml.pull.MXParser.parseProlog(MXParser.java:1422)
> 05-Jul-2012 01:03:50 at
> org.codehaus.plexus.util.xml.pull.MXParser.nextImpl(MXParser.java:1407)
> 05-Jul-2012 01:03:50 at
> org.codehaus.plexus.util.xml.pull.MXParser.next(MXParser.java:1105)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader.read(MetadataXpp3Reader.java:1193)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader.read(MetadataXpp3Reader.java:1122)
> 05-Jul-2012 01:03:50 at
> org.apache.maven.repository.internal.MavenMetadata.read(MavenMetadata.java:97)
> 05-Jul-2012 01:03:50 ... 22 more
> 05-Jul-2012 01:03:50 [ERROR]
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