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https://issues.apache.org/jira/browse/MNG-7335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Falko Modler updated MNG-7335:
------------------------------
Affects Version/s: 3.8.4
(was: 3.6.3)
> [Regression] Parallel build fails due to missing JAR artifacts in compilePath
> -----------------------------------------------------------------------------
>
> Key: MNG-7335
> URL: https://issues.apache.org/jira/browse/MNG-7335
> Project: Maven
> Issue Type: Bug
> Components: Core
> Affects Versions: 3.8.4
> Environment: - Linux (tested Docker using maven:3-jdk-8 tag): happens
> most times.
> - Windows 10: happens sometimes.
> Reporter: Falko Modler
> Assignee: Robert Scholte
> Priority: Major
> Fix For: 3.8.2, 4.0.0, 4.0.0-alpha-1
>
>
> *The following was cloned from MNG-6843 which was fixed in 3.8.2 and 3.8.3,
> but came back in 3.8.4 due to MNG-7312:*
> Build of our multi module (57) Java maven project is failing phase when
> running it as parallel in 4 threads (mvn -T 4 clean install). The failure
> happens during compilation because packages/classes from compile dependencies
> cannot be found:
> {noformat}
> [main] [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile
> (default-compile) on project common: Compilation failure: Compilation
> failure:
> [main] [ERROR]
> /home/common/src/main/java/com/foo/ZonedDateTimeParser.java:[6,32] package
> org.apache.commons.lang3 does not exist{noformat}
> After enabling debug logging (with thread names) I have found out that a
> compile path of the failing module is empty (besides target/classes):
> When running in 4 threads (-T 4):
> {noformat}
> [BuilderThread 2] [DEBUG] (f) compilePath = [/home/common/target/classes]
> ...
> [BuilderThread 2] [DEBUG] Command line options:
> [BuilderThread 2] [DEBUG] -d /home/common/target/classes -classpath
> /home/common/target/classes: -sourcepath
> /home/common/src/main/java:/home/common/target/generated-sources/annotations:
> -s /home/common/target/generated-sources/annotations -g -nowarn -target 1.8
> -source 1.8 -encoding UTF-8{noformat}
> When running in a single thread (-T 1):
> {noformat}
> [BuilderThread 0] [DEBUG] (f) compilePath = [/home/common/target/classes,
> /root/.m2/repository/commons-beanutils/commons-beanutils/1.9.3/commons-beanutils-1.9.3.jar,
>
> /root/.m2/repository/commons-collections/commons-collections/3.2.2/commons-collections-3.2.2.jar,
>
> /root/.m2/repository/org/apache/commons/commons-collections4/4.3/commons-collections4-4.3.jar,
>
> /root/.m2/repository/org/apache/commons/commons-lang3/3.9/commons-lang3-3.9.jar,
> /root/.m2/repository/org/jooq/jool-java-8/0.9.14/jool-java-8-0.9.14.jar,
> /root/.m2/repository/org/slf4j/slf4j-api/1.7.26/slf4j-api-1.7.26.jar,
> /root/.m2/repository/org/springframework/spring-beans/5.1.8.RELEASE/spring-beans-5.1.8.RELEASE.jar,
>
> /root/.m2/repository/org/springframework/spring-core/5.1.8.RELEASE/spring-core-5.1.8.RELEASE.jar,
>
> /root/.m2/repository/org/springframework/spring-context/5.1.8.RELEASE/spring-context-5.1.8.RELEASE.jar]
> ...
> [BuilderThread 0] [DEBUG] Command line options:
> [BuilderThread 0] [DEBUG] -d /home/common/target/classes -classpath
> /home/common/target/classes:/root/.m2/repository/commons-beanutils/commons-beanutils/1.9.3/commons-beanutils-1.9.3.jar:/root/.m2/repository/commons-collections/commons-collections/3.2.2/commons-collections-3.2.2.jar:/root/.m2/repository/org/apache/commons/commons-collections4/4.3/commons-collections4-4.3.jar:/root/.m2/repository/org/apache/commons/commons-lang3/3.9/commons-lang3-3.9.jar:/root/.m2/repository/org/jooq/jool-java-8/0.9.14/jool-java-8-0.9.14.jar:/root/.m2/repository/org/slf4j/slf4j-api/1.7.26/slf4j-api-1.7.26.jar:/root/.m2/repository/org/springframework/spring-beans/5.1.8.RELEASE/spring-beans-5.1.8.RELEASE.jar:/root/.m2/repository/org/springframework/spring-core/5.1.8.RELEASE/spring-core-5.1.8.RELEASE.jar:/root/.m2/repository/org/springframework/spring-context/5.1.8.RELEASE/spring-context-5.1.8.RELEASE.jar:
> -sourcepath
> /home/common/src/main/java:/home/common/target/generated-sources/annotations:
> -s /home/common/target/generated-sources/annotations -g -nowarn -target 1.8
> -source 1.8 -encoding UTF-8{noformat}
> After adding custom log messages I have found out that the root cause is that
> org.apache.maven.project.MavenProject.setArtifactFilter() is called with null
> artifactFilter parameter. The call happens for the failing module from a
> thread that is building another module. The call stack is:
> {code:java}
> "BuilderThread 0@2513" prio=5 tid=0xe nid=NA runnable
> java.lang.Thread.State: RUNNABLE
> at
> org.apache.maven.project.MavenProject.setArtifactFilter(MavenProject.java:1437)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved(MojoExecutor.java:279)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:202)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
> at
> org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call(MultiThreadedBuilder.java:190)
> at
> org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call(MultiThreadedBuilder.java:186)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748){code}
> The MavenProject objects are shared among all build threads via MavenSession
> - member {{org.apache.maven.execution.MavenSession#projects}}.
> As all the MavenSession objects are created by cloning an initial
> MavenSession object, I have added cloning of projects into the MavenSession
> clone() method. With this change the build succeeded:
> {code:java}
> @Override
> public MavenSession clone()
> {
> try
> {
> MavenSession thisClone = (MavenSession) super.clone();
> thisClone.setProjects(getProjectsClone());
> return thisClone;
> }
> catch ( CloneNotSupportedException e )
> {
> throw new RuntimeException( "Bug", e );
> }
> }
> private synchronized List<MavenProject> getProjectsClone()
> {
> if (projects == null) {
> return null;
> } else {
> if (projects.isEmpty()) {
> return Collections.emptyList();
> } else {
> List<MavenProject> clonedProjects = new
> ArrayList<>(projects.size());
> for (MavenProject project : projects) {
> clonedProjects.add(project.clone());
> } return clonedProjects;
> }
> }
> }
> {code}
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