[jira] [Created] (MNG-7693) NPE in createModelCache, modelCacheFactory is null

["Charles Oliver Nutter (Jira)" <ji...@apache.org>]

Charles Oliver Nutter created MNG-7693:
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             Summary: NPE in createModelCache, modelCacheFactory is null
                 Key: MNG-7693
                 URL: https://issues.apache.org/jira/browse/MNG-7693
             Project: Maven
          Issue Type: Bug
    Affects Versions: 3.9.0
            Reporter: Charles Oliver Nutter


This appears to be a new regression, possibly an incompatibility with polyglot-maven.

Maven 3.9.0 now produces the following error when building JRuby ([https://github.com/jruby/jruby.git):]
{noformat}
[] jruby $ mvn -Pbootstrap clean package
[INFO] Scanning for projects...
[ERROR] Internal error: java.lang.NullPointerException: Cannot invoke "org.apache.maven.repository.internal.ModelCacheFactory.createCache(org.eclipse.aether.RepositorySystemSession)" because "this.modelCacheFactory" is null -> [Help 1]
org.apache.maven.InternalErrorException: Internal error: java.lang.NullPointerException: Cannot invoke "org.apache.maven.repository.internal.ModelCacheFactory.createCache(org.eclipse.aether.RepositorySystemSession)" because "this.modelCacheFactory" is null
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:108)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:821)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:270)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:77)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:568)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: java.lang.NullPointerException: Cannot invoke "org.apache.maven.repository.internal.ModelCacheFactory.createCache(org.eclipse.aether.RepositorySystemSession)" because "this.modelCacheFactory" is null
    at org.apache.maven.project.DefaultProjectBuilder.createModelCache (DefaultProjectBuilder.java:1002)
    at org.apache.maven.project.DefaultProjectBuilder.build (DefaultProjectBuilder.java:362)
    at org.sonatype.maven.polyglot.TeslaProjectBuilder.build (TeslaProjectBuilder.java:43)
    at org.apache.maven.graph.DefaultGraphBuilder.collectProjects (DefaultGraphBuilder.java:349)
    at org.apache.maven.graph.DefaultGraphBuilder.getProjectsForMavenReactor (DefaultGraphBuilder.java:340)
    at org.apache.maven.graph.DefaultGraphBuilder.build (DefaultGraphBuilder.java:76)
    at org.apache.maven.DefaultMaven.buildGraph (DefaultMaven.java:453)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:196)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:172)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:100)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:821)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:270)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:77)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:568)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/InternalErrorException{noformat}
No additional information is given running with -X but I can provide that output if necessary.

This blocks JRuby CI due to the Windows Github Actions having updated to Maven 3.9.0 recently. Other platforms may soon also fail if updated.

Reproduce by using Maven 3.9.0 to build JRuby, which built correctly on previous Maven versions.



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