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From "Joakim Erdfelt (JIRA)" <j...@codehaus.org>
Subject [jira] Commented: (MNG-3580) FATAL ERROR and NPE on start
Date Fri, 12 Sep 2008 16:10:48 GMT

    [ http://jira.codehaus.org/browse/MNG-3580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=147820#action_147820
] 

Joakim Erdfelt commented on MNG-3580:
-------------------------------------

Once I roll in the patch from MNG-3573, I can now see the error messages for bad parent pom
information.

The original ModelUtils NPE goes away if I fix the bad parent pom information on the corporate
repository.

So, the result of all of this is ...

1) ModelUtils iterates thru a parentPlugins List that has a null entry.
2) The null entry occurs due to a pom parsing error on bad UTF8 encoding.
2.a) The IBM JDK allows this null entry to be created in the List.
3) The root cause of the null entry (the bad parsing) is incorrectly reported to the system
as a Unable to Find Artifact.
4) The crucial information, "There is a bad pom" is not communicated, to the user, or the
system.

I think we can close this Jira, apply MNG-3753, and create a new Jira for clearer error messages
on bad poms.
Funny enough, better error messages on bad poms has (kinda) been started as MNG-3392


> FATAL ERROR and NPE on start
> ----------------------------
>
>                 Key: MNG-3580
>                 URL: http://jira.codehaus.org/browse/MNG-3580
>             Project: Maven 2
>          Issue Type: Bug
>    Affects Versions: 2.0.9
>         Environment: Linux iitm50ws1106 2.6.25.3-2-default #1 SMP 2008-05-10 07:46:36
+0200 x86_64 x86_64 x86_64 GNU/Linux
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr1-20080416_01(SR1))
> IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460-20080415_18762 (JIT
enabled, AOT enabled)
> J9VM - 20080415_018762_LHdSMr
> JIT  - r9_20080415_1520
> GC   - 20080415_AA)
> JCL  - 20080412_01
>            Reporter: Erik Putrycz
>             Fix For: 2.0.11
>
>         Attachments: debug-output.patch, maven.log, MNG-3580-ibm-jdk-issues.zip, MNG-3580-maven-core.patch,
MNG-3580.patch
>
>
> Any mvn command does give me the following error message
> [INFO] Scanning for projects...
> [INFO] Reactor build order:
> [INFO]   Business Rules Extractor
> [INFO]   Business Rules Extractor core functions
> [INFO]   COBOL Parser and ANTLR Tools
> [INFO]   Business Rules Extractor data model
> [INFO]   Documentation Extractor module
> [INFO]   Extractor module
> [INFO]   Business Rules Navigator
> WAGON_VERSION: 1.0-beta-2
> [INFO] ------------------------------------------------------------------------
> [INFO] Building Business Rules Extractor
> [INFO]    task-segment: [install]
> [INFO] ------------------------------------------------------------------------
> [INFO] ------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO] ------------------------------------------------------------------------
> [INFO] null
> [INFO] ------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException
>         at org.apache.maven.project.ModelUtils.mergePluginLists(ModelUtils.java:164)
>         at org.apache.maven.project.inheritance.DefaultModelInheritanceAssembler.assembleBuildInheritance(DefaultModelInheritanceAssembler.java:366)
>         at org.apache.maven.project.inheritance.DefaultModelInheritanceAssembler.assembleModelInheritance(DefaultModelInheritanceAssembler.java:168)
>         at org.apache.maven.project.inheritance.DefaultModelInheritanceAssembler.assembleModelInheritance(DefaultModelInheritanceAssembler.java:61)
>         at org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(DefaultMavenProjectBuilder.java:852)
>         at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromRepository(DefaultMavenProjectBuilder.java:253)
>         at org.apache.maven.plugin.DefaultPluginManager.checkRequiredMavenVersion(DefaultPluginManager.java:265)
>         at org.apache.maven.plugin.DefaultPluginManager.verifyVersionedPlugin(DefaultPluginManager.java:197)
>         at org.apache.maven.plugin.DefaultPluginManager.verifyPlugin(DefaultPluginManager.java:176)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1274)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1542)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.bindLifecycleForPackaging(DefaultLifecycleExecutor.java:1033)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.constructLifecycleMappings(DefaultLifecycleExecutor.java:997)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:477)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
>         at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
>         at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
>         at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:59)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:39)
>         at java.lang.reflect.Method.invoke(Method.java:612)
>         at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
>         at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
>         at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
>         at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
> [INFO] ------------------------------------------------------------------------
> [INFO] Total time: 1 second
> [INFO] Finished at: Fri May 16 13:10:16 EDT 2008
> [INFO] Final Memory: 6M/19M
> [INFO] ------------------------------------------------------------------------

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