[jira] Commented: (MNG-1320) Build failed due to an empty or corrupt metadata file in the repository

["John Casey (JIRA)" <ji...@codehaus.org>]

    [ http://jira.codehaus.org/browse/MNG-1320?page=comments#action_49240 ] 

John Casey commented on MNG-1320:
---------------------------------

Something is causing the metadata in the local repository to be corrupted. This has two implications:

1. Subsequent builds will pickup the empty metadata file, and fail to resolve a version. If this is a snapshot artifact, it should fix itself. If it's not, I'm not at all sure that it will.

2. This could potentially overwrite locally installed versions, erasing that information.

We just need to be more careful when downloading metadata files, and somehow verify that no errors occurred during transfer before we replace any existing file in the local repository. I'm not sure why this is happening, but it's better to address it at the WagonManager level, since that will make it harder to introduce new permutations for corrupting metadata.

> Build failed due to an empty or corrupt metadata file in the repository
> -----------------------------------------------------------------------
>
>          Key: MNG-1320
>          URL: http://jira.codehaus.org/browse/MNG-1320
>      Project: Maven 2
>         Type: Bug
>     Versions: 2.0
>     Reporter: Adrian

>
>
> Build failed due to an empty or corrupt metadata file in the repository. Possibly had a network error whilst downloading the metadata file. The stack trace that occurred when the error was encountered was as follows.
> + Error stacktraces are turned on.
> [INFO] Scanning for projects...
> [INFO] ----------------------------------------------------------------------------
> [INFO] Building Maven Ear plugin
> [INFO]    task-segment: [clean, install]
> [INFO] ----------------------------------------------------------------------------
> [INFO] [clean:clean]
> [INFO] ----------------------------------------------------------------------------
> [ERROR] BUILD ERROR
> [INFO] ----------------------------------------------------------------------------
> [INFO] The plugin 'org.apache.maven.plugins:maven-resources-plugin' does not exist or no valid version could be found
> [INFO] ----------------------------------------------------------------------------
> [INFO] Trace
> org.apache.maven.lifecycle.LifecycleExecutionException: The plugin 'org.apache.maven.plugins:maven-resources-plugin' does not exist or no valid version could be found
> 	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1124)
> 	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1356)
> 	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.bindLifecycleForPackaging(DefaultLifecycleExecutor.java:896)
> 	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.constructLifecycleMappings(DefaultLifecycleExecutor.java:862)
> 	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:447)
> 	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:301)
> 	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:268)
> 	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:137)
> 	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:316)
> 	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:113)
> 	at org.apache.maven.cli.MavenCli.main(MavenCli.java:249)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:585)
> 	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)
> Caused by: org.apache.maven.plugin.version.PluginVersionNotFoundException: The plugin 'org.apache.maven.plugins:maven-resources-plugin' does not exist or no valid version could be found
> 	at org.apache.maven.plugin.version.DefaultPluginVersionManager.resolvePluginVersion(DefaultPluginVersionManager.java:225)
> 	at org.apache.maven.plugin.version.DefaultPluginVersionManager.resolvePluginVersion(DefaultPluginVersionManager.java:87)
> 	at org.apache.maven.plugin.DefaultPluginManager.verifyPlugin(DefaultPluginManager.java:158)
> 	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1095)
> 	... 18 more
> [INFO] ----------------------------------------------------------------------------
> [INFO] Total time: < 1 second
> [INFO] Finished at: Tue Oct 25 15:33:37 BST 2005
> [INFO] Final Memory: 1M/3M
> [INFO] ----------------------------------------------------------------------------

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