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http://jira.codehaus.org/browse/MNG-4785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=233716#action_233716
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Stuart McCulloch commented on MNG-4785:
---------------------------------------
Looks like the DsoSurefireMojo spawns a child thread that uses the legacy Maven
resolution API. The new beta uses a threadlocal (see
org.apache.maven.plugin.internal.DefaultLegacySupport) to provide access to the
Maven session from legacy components, but of course this threadlocal is only
valid for the executing mojo thread - not the spawned child thread.
Changing DefaultLegacySupport to use an InheritableThreadLocal should solve
this NPE, but I'm not sure what impact this would have wrt. cleanup of the
Maven session given that Maven has no knowledge of the child thread...
> NPE in dependency resolution code for TC plugin
> -----------------------------------------------
>
> Key: MNG-4785
> URL: http://jira.codehaus.org/browse/MNG-4785
> Project: Maven 2 & 3
> Issue Type: Bug
> Components: Artifacts and Repositories, Dependencies
> Affects Versions: 3.0-beta-3
> Environment: OS X 10.6
> Reporter: Oleg Gusakov
> Attachments: m3tctest.tgz
>
>
> Terracotta Maven plugin 1.4.0 test produces NPE in 3.0-beta-3, but works fine
> in 3.0-beta-2
> {code}
> [ERROR] [node0]
> java.lang.NullPointerException
> at
> org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:149)
> at
> org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:139)
> at
> org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:237)
> at
> org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:219)
> at
> org.apache.maven.project.artifact.MavenMetadataSource.retrieveRelocatedProject(MavenMetadataSource.java:584)
> at
> org.apache.maven.project.artifact.MavenMetadataSource.retrieve(MavenMetadataSource.java:192)
> at
> org.apache.maven.repository.legacy.resolver.DefaultLegacyArtifactCollector.recurse(DefaultLegacyArtifactCollector.java:532)
> at
> org.apache.maven.repository.legacy.resolver.DefaultLegacyArtifactCollector.collect(DefaultLegacyArtifactCollector.java:144)
> at
> org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:451)
> at
> org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveWithExceptions(DefaultArtifactResolver.java:307)
> at
> org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:301)
> at
> org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:280)
> at
> org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:258)
> at
> org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:243)
> at
> org.terracotta.maven.plugins.tc.DsoArtifactResolverImpl.resolveArtifact(DsoArtifactResolverImpl.java:145)
> at
> org.terracotta.maven.plugins.tc.DsoSurefireMojo.addArtifact(DsoSurefireMojo.java:775)
> at
> org.terracotta.maven.plugins.tc.DsoSurefireMojo.constructSurefireBooter(DsoSurefireMojo.java:548)
> at
> org.terracotta.maven.plugins.tc.DsoSurefireMojo$SurefireThread.runSurefire(DsoSurefireMojo.java:434)
> at
> org.terracotta.maven.plugins.tc.DsoSurefireMojo$SurefireThread.run(DsoSurefireMojo.java:417)
> at java.lang.Thread.run(Thread.java:637)
> [INFO] All nodes completed
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Stopping DSO Server
> [INFO] [dso stop] 2010-08-30 11:10:42,625 INFO - Terracotta 3.1.0, as of
> 20090821-080813 (Revision 13442 by cru...@su10mo5 from 3.1)
> [INFO] OK
> [{code}
> Test project - attached
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