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http://jira.codehaus.org/browse/MNG-4996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=267511#action_267511
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Kari J. Niemi commented on MNG-4996:
------------------------------------
It seems I've forgotten to specifically mention that the jbi-maven-plugin is
not yet marked as thread-safe and is causing a lot of warnings in the build
log. I probably thought that it's not causing the problem because (as far as I
know) it's mostly just binding the "basic" maven plugins to different phases.
But actually, I really don't know. And actually I don't know which versions of
the "basic" maven plugins(depensurefire/ it uses... maybe it's binding some
specific(older) versions and not using the ones defined in our
pom.xmls...(?)... hmmmm... actually I propably thought the pluginArtifactMap
there would reveal this...
> Maven3 parallel build fails occasionally for classpath problems.
> ----------------------------------------------------------------
>
> Key: MNG-4996
> URL: http://jira.codehaus.org/browse/MNG-4996
> Project: Maven 2 & 3
> Issue Type: Bug
> Components: Plugins and Lifecycle
> Affects Versions: 3.0.1
> Environment: maven 3.0.1, maven 3.0
> Reporter: Kari J. Niemi
> Assignee: Kristian Rosenvold
>
> In a multimodule (>120 modules) maven build, the compiler plug-in would seem
> to fail in creating a correct class-path every now and then.
> Instead of this entry in maven -X logs for a single module build:
> ----
> [DEBUG] Configuring mojo
> 'org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile' with basic
> configurator -->
> ..
> [DEBUG] (f) classpathElements =
> [/home/karniemi/"mymodulepath"/target/classes,
> /home/karniemi/.m2/repository/org/apache/servicemix/servicemix-utils/1.2.0/servicemix-utils-1.2.0.jar,
>
> /home/karniemi/.m2/repository/org/apache/geronimo/specs/geronimo-stax-api_1.0_spec/1.0.1/geronimo-stax-api_1.0_spec-1.0.1.jar,
>
> /home/karniemi/.m2/repository/org/codehaus/woodstox/wstx-asl/3.2.6/wstx-asl-3.2.6.jar,
>
> /home/karniemi/.m2/repository/org/apache/servicemix/specs/org.apache.servicemix.specs.jbi-api-1.0/1.4.0/org.apache.servicemix.specs.jbi-api-1.0-1.4.0.jar,
>
> /home/karniemi/.m2/repository/org/apache/geronimo/specs/geronimo-activation_1.1_spec/1.0.2/geronimo-activation_1.1_spec-1.0.2.jar,
> /home/karniemi/.m2/repository/log4j/log4j/1.2.14/log4j-1.2.14.jar]
> ----
> every now and then I get this in the parallel build:
> ----
> [DEBUG] Configuring mojo
> 'org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile' with basic
> configurator -->
> ...
> [DEBUG] (f) classpathElements =
> [/home/karniemi/"mymodulepath"/target/classes]
> ----
> And of course the compilation fails because none of the dependencies are
> added to the classpath. Sometimes it goes fine in the multi-module build, but
> every now and then it fails for this.
> In both maven runs I can see that the dependencies are resolved fine:
> ----------
> [DEBUG] "mymodule":jar:DYNAMIC-SNAPSHOT
> [DEBUG] junit:junit:jar:4.7:test
> [DEBUG] org.apache.servicemix:servicemix-utils:jar:1.2.0:provided
> [DEBUG]
> org.apache.geronimo.specs:geronimo-stax-api_1.0_spec:jar:1.0.1:provided
> [DEBUG] org.codehaus.woodstox:wstx-asl:jar:3.2.6:provided
> [DEBUG]
> org.apache.servicemix.specs:org.apache.servicemix.specs.jbi-api-1.0:jar:1.4.0:provided
> (scope managed from compile) (version managed from 1.1.0)
> [DEBUG]
> org.apache.geronimo.specs:geronimo-activation_1.1_spec:jar:1.0.2:provided
> [DEBUG] log4j:log4j:jar:1.2.14:provided
> -----------
>
> The pluginArtifactMap looks like this:
> --------------------
> [DEBUG] (s) pluginArtifactMap =
> {org.apache.maven.plugins:maven-surefire-plugin=org.apache.maven.plugins:maven-surefire-plugin:maven-plugin:2.6:,
>
> org.apache.maven.surefire:surefire-booter=org.apache.maven.surefire:surefire-booter:jar:2.6:compile,
>
> org.apache.maven.surefire:surefire-api=org.apache.maven.surefire:surefire-api:jar:2.6:compile,
>
> org.apache.maven.surefire:maven-surefire-common=org.apache.maven.surefire:maven-surefire-common:jar:2.6:compile,
>
> org.apache.maven.shared:maven-common-artifact-filters=org.apache.maven.shared:maven-common-artifact-filters:jar:1.2:compile,
>
> org.codehaus.plexus:plexus-utils=org.codehaus.plexus:plexus-utils:jar:2.0.5:compile,
> junit:junit=junit:junit:jar:3.8.1:compile,
> org.apache.maven.reporting:maven-reporting-api=org.apache.maven.reporting:maven-reporting-api:jar:2.0.9:compile}
> --------------------
> I'm really using jbi-maven-plugin for most of the modules, and that plugin
> binds the other plugins -also the compiler-plugin -to maven life-cycle phases.
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