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Key: MJAVADOC-246
Type: Bug Bug
Status: Closed Closed
Resolution: Fixed
Priority: Blocker Blocker
Assignee: Vincent Siveton
Reporter: Malachi de AElfweald
Votes: 3
Watchers: 4
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Maven 2.x Javadoc Plugin

ExceptionInInitializerError with maven-site-plugin:2.1-SNAPSHOT and mvn > 2.1

Created: 29/Jul/09 10:34 PM   Updated: 14/Sep/09 06:01 AM   Resolved: 14/Sep/09 06:01 AM
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Component/s: None
Affects Version/s: 2.6
Fix Version/s: 2.6.1

Time Tracking:
Not Specified

Environment:
Hudson or command-line
Maven 2.1.0 or 2.2.0
JDK 1.6 or JDK 1.7
maven-site-plugin:2.1-SNAPSHOT
OpenSolaris


 Description  « Hide

This bug only happens if I have maven-javadoc-plugin enabled. If I comment it out site generation works. The POM is not specifying a particular version so I am not sure which one it is using.

These bugs seem to report the same problem against other plugins:
http://jira.codehaus.org/browse/MOJO-1118
http://jira.codehaus.org/browse/MOJO-1101

Based on the error message, I checked the repository after successfully building without JavaDoc and it shows these versions of commons-logging were used:
1.0
1.0.3
1.0.4
1.1

The only SNAPSHOT dependency is 2.1-SNAPSHOT of the maven-site-plugin (to get around site generation bugs). I am using the -U during building.

# mvn site
...
[INFO] Generating "JavaDocs" report.
[FATAL ERROR] org.apache.maven.plugins.site.SiteMojo#execute() caused a linkage error (java.lang.ExceptionInInitializerError) and may be out-of-date. Check the realms:
[FATAL ERROR] Plugin realm = app0.child-container[org.apache.maven.plugins:maven-site-plugin:2.1-SNAPSHOT]
urls[0] = file:/home/hudson/.m2/repository/org/apache/maven/plugins/maven-site-plugin/2.1-SNAPSHOT/maven-site-plugin-2.1-SNAPSHOT.jar
urls[1] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-utils/1.5.1/plexus-utils-1.5.1.jar
urls[2] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-xhtml/1.1.2-SNAPSHOT/doxia-module-xhtml-1.1.2-SNAPSHOT.jar
urls[3] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-core/1.1.2-SNAPSHOT/doxia-core-1.1.2-SNAPSHOT.jar
urls[4] = file:/home/hudson/.m2/repository/xerces/xercesImpl/2.8.1/xercesImpl-2.8.1.jar
urls[5] = file:/home/hudson/.m2/repository/xml-apis/xml-apis/1.3.03/xml-apis-1.3.03.jar
urls[6] = file:/home/hudson/.m2/repository/commons-lang/commons-lang/2.4/commons-lang-2.4.jar
urls[7] = file:/home/hudson/.m2/repository/commons-httpclient/commons-httpclient/3.1/commons-httpclient-3.1.jar
urls[8] = file:/home/hudson/.m2/repository/commons-logging/commons-logging/1.0.4/commons-logging-1.0.4.jar
urls[9] = file:/home/hudson/.m2/repository/commons-codec/commons-codec/1.2/commons-codec-1.2.jar
urls[10] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-apt/1.1.2-SNAPSHOT/doxia-module-apt-1.1.2-SNAPSHOT.jar
urls[11] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-xdoc/1.1.2-SNAPSHOT/doxia-module-xdoc-1.1.2-SNAPSHOT.jar
urls[12] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-fml/1.1.2-SNAPSHOT/doxia-module-fml-1.1.2-SNAPSHOT.jar
urls[13] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-decoration-model/1.1.2-SNAPSHOT/doxia-decoration-model-1.1.2-SNAPSHOT.jar
urls[14] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-site-renderer/1.1.2-SNAPSHOT/doxia-site-renderer-1.1.2-SNAPSHOT.jar
urls[15] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-i18n/1.0-beta-7/plexus-i18n-1.0-beta-7.jar
urls[16] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-velocity/1.1.7/plexus-velocity-1.1.7.jar
urls[17] = file:/home/hudson/.m2/repository/org/apache/velocity/velocity/1.5/velocity-1.5.jar
urls[18] = file:/home/hudson/.m2/repository/commons-collections/commons-collections/3.2/commons-collections-3.2.jar
urls[19] = file:/home/hudson/.m2/repository/oro/oro/2.0.8/oro-2.0.8.jar
urls[20] = file:/home/hudson/.m2/repository/org/apache/maven/shared/maven-doxia-tools/1.1-SNAPSHOT/maven-doxia-tools-1.1-SNAPSHOT.jar
urls[21] = file:/home/hudson/.m2/repository/commons-io/commons-io/1.4/commons-io-1.4.jar
urls[22] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-archiver/1.0-alpha-7/plexus-archiver-1.0-alpha-7.jar
urls[23] = file:/home/hudson/.m2/repository/org/mortbay/jetty/jetty/6.1.5/jetty-6.1.5.jar
urls[24] = file:/home/hudson/.m2/repository/org/mortbay/jetty/jetty-util/6.1.5/jetty-util-6.1.5.jar
urls[25] = file:/home/hudson/.m2/repository/org/mortbay/jetty/servlet-api-2.5/6.1.5/servlet-api-2.5-6.1.5.jar
[FATAL ERROR] Container realm = plexus.core
urls[0] = file:/opt/apache-maven-2.1.0/lib/maven-2.1.0-uber.jar
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.ExceptionInInitializerError
	at org.apache.maven.plugin.javadoc.JavadocUtil.fetchURL(JavadocUtil.java:730)
	at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.isValidJavadocLink(AbstractJavadocMojo.java:4680)
	at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.addLinkArguments(AbstractJavadocMojo.java:3229)
	at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.addStandardDocletOptions(AbstractJavadocMojo.java:3885)
	at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.executeReport(AbstractJavadocMojo.java:1761)
	at org.apache.maven.plugin.javadoc.JavadocReport.generate(JavadocReport.java:122)
	at org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:164)
	at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:337)
	at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:138)
	at org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:135)
	at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:102)
	at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:483)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:678)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:540)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:519)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:332)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:356)
	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:597)
	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.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: 
org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, 
which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 
'org.apache.commons.logging.Log' visible, which is not allowed.) (Caused by org.apache.commons.logging.LogConfigurationException: 
org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, 
which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 
'org.apache.commons.logging.Log' visible, which is not allowed.))
	at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
	at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
	at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
	at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
	at org.apache.commons.httpclient.HttpClient.<clinit>(HttpClient.java:66)
	... 29 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have 
more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid
 class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.)
	at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397)
	at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
	... 33 more
Caused by: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' 
visible, which is not allowed.
	at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:385)
	... 34 more
[INFO] ------------------------------------------------------------------------


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[ Permalink | « Hide ]
Vincent Siveton added a comment - 03/Aug/09 08:13 AM

confirmed


Vincent Siveton made changes - 03/Aug/09 08:13 AM
Field Original Value New Value
Priority Major [ 3 ] Blocker [ 1 ]
Fix Version/s 2.6.1 [ 14533 ]
Vincent Siveton made changes - 03/Aug/09 08:13 AM
Affects Version/s 2.6 [ 14525 ]
[ Permalink | « Hide ]
Malachi de AElfweald added a comment - 03/Aug/09 12:12 PM

2.6-SNAPSHOT does appear to have fixed that issue; leaving behind a weird side effect:

[INFO] Generating "JavaDocs" report.
Aug 3, 2009 10:15:45 AM org.apache.commons.httpclient.HttpMethodBase processCookieHeaders
WARNING: Cookie rejected: "$Version=0; JSESSIONID=50AF6CD52E5016EFA7D533AF6DD95394; $Path=/servlets". Illegal path attribute "/servlets". Path of origin: "/nonav/maven/apidocs/package-list"
[INFO] The goal 'org.apache.maven.plugins:maven-javadoc-plugin:2.6-SNAPSHOT:javadoc' has not be previously called for the project: 'org.eoti.maven.skins:ljod:jar:2.3-SNAPSHOT'. Trying to invoke it...
[INFO] The goal 'org.apache.maven.plugins:maven-javadoc-plugin:2.6-SNAPSHOT:javadoc' has not be previously called for the project: 'org.eoti:seshat:jar:2.3-SNAPSHOT'. Trying to invoke it...
[INFO] The goal 'org.apache.maven.plugins:maven-javadoc-plugin:2.6-SNAPSHOT:javadoc' has not be previously called for the project: 'org.eoti:clotho:jar:2.3-SNAPSHOT'. Trying to invoke it...
[INFO] The goal 'org.apache.maven.plugins:maven-javadoc-plugin:2.6-SNAPSHOT:javadoc' has not be previously called for the project: 'org.eoti:lachesis:jar:2.3-SNAPSHOT'. Trying to invoke it...
[INFO] The goal 'org.apache.maven.plugins:maven-javadoc-plugin:2.6-SNAPSHOT:javadoc' has not be previously called for the project: 'org.eoti:atropos:jar:2.3-SNAPSHOT'. Trying to invoke it...
Loading source files for package org.eoti.rei.cmp...


[ Permalink | « Hide ]
Parolini Antonio added a comment - 04/Aug/09 02:01 AM

Same here. My workaround is to force version 2.5 of the maven-javadoc-plugin


[ Permalink | « Hide ]
Malachi de AElfweald added a comment - 11/Aug/09 09:56 AM

I misspoke earlier. In addition to changing to 2.6-SNAPSHOT I had changed the maven-site-plugin version (and thus broke other parts of the site). Changing the maven-site-plugin back to 2.1-SNAPSHOT w/ javadoc at 2.6-SNAPSHOT I still get the error.


Vincent Siveton made changes - 14/Sep/09 05:53 AM
Description This bug only happens if I have maven-javadoc-plugin enabled. If I comment it out site generation works. The POM is not specifying a particular version so I am not sure which one it is using.

These bugs seem to report the same problem against other plugins:
http://jira.codehaus.org/browse/MOJO-1118
http://jira.codehaus.org/browse/MOJO-1101

Based on the error message, I checked the repository after successfully building without JavaDoc and it shows these versions of commons-logging were used:
1.0
1.0.3
1.0.4
1.1

The only SNAPSHOT dependency is 2.1-SNAPSHOT of the maven-site-plugin (to get around site generation bugs). I am using the -U during building.

[INFO] Generating "JavaDocs" report.
[FATAL ERROR] org.apache.maven.plugins.site.SiteMojo#execute() caused a linkage error (java.lang.ExceptionInInitializerError) and may be out-of-date. Check the realms:
[FATAL ERROR] Plugin realm = app0.child-container[org.apache.maven.plugins:maven-site-plugin:2.1-SNAPSHOT]
urls[0] = file:/home/hudson/.m2/repository/org/apache/maven/plugins/maven-site-plugin/2.1-SNAPSHOT/maven-site-plugin-2.1-SNAPSHOT.jar
urls[1] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-utils/1.5.1/plexus-utils-1.5.1.jar
urls[2] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-xhtml/1.1.2-SNAPSHOT/doxia-module-xhtml-1.1.2-SNAPSHOT.jar
urls[3] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-core/1.1.2-SNAPSHOT/doxia-core-1.1.2-SNAPSHOT.jar
urls[4] = file:/home/hudson/.m2/repository/xerces/xercesImpl/2.8.1/xercesImpl-2.8.1.jar
urls[5] = file:/home/hudson/.m2/repository/xml-apis/xml-apis/1.3.03/xml-apis-1.3.03.jar
urls[6] = file:/home/hudson/.m2/repository/commons-lang/commons-lang/2.4/commons-lang-2.4.jar
urls[7] = file:/home/hudson/.m2/repository/commons-httpclient/commons-httpclient/3.1/commons-httpclient-3.1.jar
urls[8] = file:/home/hudson/.m2/repository/commons-logging/commons-logging/1.0.4/commons-logging-1.0.4.jar
urls[9] = file:/home/hudson/.m2/repository/commons-codec/commons-codec/1.2/commons-codec-1.2.jar
urls[10] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-apt/1.1.2-SNAPSHOT/doxia-module-apt-1.1.2-SNAPSHOT.jar
urls[11] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-xdoc/1.1.2-SNAPSHOT/doxia-module-xdoc-1.1.2-SNAPSHOT.jar
urls[12] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-fml/1.1.2-SNAPSHOT/doxia-module-fml-1.1.2-SNAPSHOT.jar
urls[13] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-decoration-model/1.1.2-SNAPSHOT/doxia-decoration-model-1.1.2-SNAPSHOT.jar
urls[14] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-site-renderer/1.1.2-SNAPSHOT/doxia-site-renderer-1.1.2-SNAPSHOT.jar
urls[15] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-i18n/1.0-beta-7/plexus-i18n-1.0-beta-7.jar
urls[16] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-velocity/1.1.7/plexus-velocity-1.1.7.jar
urls[17] = file:/home/hudson/.m2/repository/org/apache/velocity/velocity/1.5/velocity-1.5.jar
urls[18] = file:/home/hudson/.m2/repository/commons-collections/commons-collections/3.2/commons-collections-3.2.jar
urls[19] = file:/home/hudson/.m2/repository/oro/oro/2.0.8/oro-2.0.8.jar
urls[20] = file:/home/hudson/.m2/repository/org/apache/maven/shared/maven-doxia-tools/1.1-SNAPSHOT/maven-doxia-tools-1.1-SNAPSHOT.jar
urls[21] = file:/home/hudson/.m2/repository/commons-io/commons-io/1.4/commons-io-1.4.jar
urls[22] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-archiver/1.0-alpha-7/plexus-archiver-1.0-alpha-7.jar
urls[23] = file:/home/hudson/.m2/repository/org/mortbay/jetty/jetty/6.1.5/jetty-6.1.5.jar
urls[24] = file:/home/hudson/.m2/repository/org/mortbay/jetty/jetty-util/6.1.5/jetty-util-6.1.5.jar
urls[25] = file:/home/hudson/.m2/repository/org/mortbay/jetty/servlet-api-2.5/6.1.5/servlet-api-2.5-6.1.5.jar
[FATAL ERROR] Container realm = plexus.core
urls[0] = file:/opt/apache-maven-2.1.0/lib/maven-2.1.0-uber.jar
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.ExceptionInInitializerError
at org.apache.maven.plugin.javadoc.JavadocUtil.fetchURL(JavadocUtil.java:730)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.isValidJavadocLink(AbstractJavadocMojo.java:4680)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.addLinkArguments(AbstractJavadocMojo.java:3229)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.addStandardDocletOptions(AbstractJavadocMojo.java:3885)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.executeReport(AbstractJavadocMojo.java:1761)
at org.apache.maven.plugin.javadoc.JavadocReport.generate(JavadocReport.java:122)
at org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:164)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:337)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:138)
at org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:135)
at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:102)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:483)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:678)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:540)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:519)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:332)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:356)
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:597)
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.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.) (Caused by org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.))
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
at org.apache.commons.httpclient.HttpClient.<clinit>(HttpClient.java:66)
... 29 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.)
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397)
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
... 33 more
Caused by: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:385)
... 34 more
[INFO] ------------------------------------------------------------------------
This bug only happens if I have maven-javadoc-plugin enabled. If I comment it out site generation works. The POM is not specifying a particular version so I am not sure which one it is using.

These bugs seem to report the same problem against other plugins:
http://jira.codehaus.org/browse/MOJO-1118
http://jira.codehaus.org/browse/MOJO-1101

Based on the error message, I checked the repository after successfully building without JavaDoc and it shows these versions of commons-logging were used:
1.0
1.0.3
1.0.4
1.1

The only SNAPSHOT dependency is 2.1-SNAPSHOT of the maven-site-plugin (to get around site generation bugs). I am using the -U during building.

{noformat}
# mvn site
...
[INFO] Generating "JavaDocs" report.
[FATAL ERROR] org.apache.maven.plugins.site.SiteMojo#execute() caused a linkage error (java.lang.ExceptionInInitializerError) and may be out-of-date. Check the realms:
[FATAL ERROR] Plugin realm = app0.child-container[org.apache.maven.plugins:maven-site-plugin:2.1-SNAPSHOT]
urls[0] = file:/home/hudson/.m2/repository/org/apache/maven/plugins/maven-site-plugin/2.1-SNAPSHOT/maven-site-plugin-2.1-SNAPSHOT.jar
urls[1] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-utils/1.5.1/plexus-utils-1.5.1.jar
urls[2] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-xhtml/1.1.2-SNAPSHOT/doxia-module-xhtml-1.1.2-SNAPSHOT.jar
urls[3] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-core/1.1.2-SNAPSHOT/doxia-core-1.1.2-SNAPSHOT.jar
urls[4] = file:/home/hudson/.m2/repository/xerces/xercesImpl/2.8.1/xercesImpl-2.8.1.jar
urls[5] = file:/home/hudson/.m2/repository/xml-apis/xml-apis/1.3.03/xml-apis-1.3.03.jar
urls[6] = file:/home/hudson/.m2/repository/commons-lang/commons-lang/2.4/commons-lang-2.4.jar
urls[7] = file:/home/hudson/.m2/repository/commons-httpclient/commons-httpclient/3.1/commons-httpclient-3.1.jar
urls[8] = file:/home/hudson/.m2/repository/commons-logging/commons-logging/1.0.4/commons-logging-1.0.4.jar
urls[9] = file:/home/hudson/.m2/repository/commons-codec/commons-codec/1.2/commons-codec-1.2.jar
urls[10] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-apt/1.1.2-SNAPSHOT/doxia-module-apt-1.1.2-SNAPSHOT.jar
urls[11] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-xdoc/1.1.2-SNAPSHOT/doxia-module-xdoc-1.1.2-SNAPSHOT.jar
urls[12] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-fml/1.1.2-SNAPSHOT/doxia-module-fml-1.1.2-SNAPSHOT.jar
urls[13] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-decoration-model/1.1.2-SNAPSHOT/doxia-decoration-model-1.1.2-SNAPSHOT.jar
urls[14] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-site-renderer/1.1.2-SNAPSHOT/doxia-site-renderer-1.1.2-SNAPSHOT.jar
urls[15] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-i18n/1.0-beta-7/plexus-i18n-1.0-beta-7.jar
urls[16] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-velocity/1.1.7/plexus-velocity-1.1.7.jar
urls[17] = file:/home/hudson/.m2/repository/org/apache/velocity/velocity/1.5/velocity-1.5.jar
urls[18] = file:/home/hudson/.m2/repository/commons-collections/commons-collections/3.2/commons-collections-3.2.jar
urls[19] = file:/home/hudson/.m2/repository/oro/oro/2.0.8/oro-2.0.8.jar
urls[20] = file:/home/hudson/.m2/repository/org/apache/maven/shared/maven-doxia-tools/1.1-SNAPSHOT/maven-doxia-tools-1.1-SNAPSHOT.jar
urls[21] = file:/home/hudson/.m2/repository/commons-io/commons-io/1.4/commons-io-1.4.jar
urls[22] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-archiver/1.0-alpha-7/plexus-archiver-1.0-alpha-7.jar
urls[23] = file:/home/hudson/.m2/repository/org/mortbay/jetty/jetty/6.1.5/jetty-6.1.5.jar
urls[24] = file:/home/hudson/.m2/repository/org/mortbay/jetty/jetty-util/6.1.5/jetty-util-6.1.5.jar
urls[25] = file:/home/hudson/.m2/repository/org/mortbay/jetty/servlet-api-2.5/6.1.5/servlet-api-2.5-6.1.5.jar
[FATAL ERROR] Container realm = plexus.core
urls[0] = file:/opt/apache-maven-2.1.0/lib/maven-2.1.0-uber.jar
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.ExceptionInInitializerError
at org.apache.maven.plugin.javadoc.JavadocUtil.fetchURL(JavadocUtil.java:730)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.isValidJavadocLink(AbstractJavadocMojo.java:4680)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.addLinkArguments(AbstractJavadocMojo.java:3229)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.addStandardDocletOptions(AbstractJavadocMojo.java:3885)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.executeReport(AbstractJavadocMojo.java:1761)
at org.apache.maven.plugin.javadoc.JavadocReport.generate(JavadocReport.java:122)
at org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:164)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:337)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:138)
at org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:135)
at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:102)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:483)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:678)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:540)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:519)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:332)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:356)
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:597)
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.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.) (Caused by org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.))
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
at org.apache.commons.httpclient.HttpClient.<clinit>(HttpClient.java:66)
... 29 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.)
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397)
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
... 33 more
Caused by: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:385)
... 34 more
[INFO] ------------------------------------------------------------------------

{noformat}
Environment Hudson or command-line
Maven 2.1.0 or 2.2.0
JDK 1.6 or JDK 1.7
OpenSolaris 		Hudson or command-line
Maven 2.1.0 or 2.2.0
JDK 1.6 or JDK 1.7
maven-site-plugin:2.1-SNAPSHOT
OpenSolaris
Summary ExceptionInInitializerError ExceptionInInitializerError with maven-site-plugin:2.1-SNAPSHOT and mvn > 2.1
Vincent Siveton made changes - 14/Sep/09 05:54 AM
Description This bug only happens if I have maven-javadoc-plugin enabled. If I comment it out site generation works. The POM is not specifying a particular version so I am not sure which one it is using.

These bugs seem to report the same problem against other plugins:
http://jira.codehaus.org/browse/MOJO-1118
http://jira.codehaus.org/browse/MOJO-1101

Based on the error message, I checked the repository after successfully building without JavaDoc and it shows these versions of commons-logging were used:
1.0
1.0.3
1.0.4
1.1

The only SNAPSHOT dependency is 2.1-SNAPSHOT of the maven-site-plugin (to get around site generation bugs). I am using the -U during building.

{noformat}
# mvn site
...
[INFO] Generating "JavaDocs" report.
[FATAL ERROR] org.apache.maven.plugins.site.SiteMojo#execute() caused a linkage error (java.lang.ExceptionInInitializerError) and may be out-of-date. Check the realms:
[FATAL ERROR] Plugin realm = app0.child-container[org.apache.maven.plugins:maven-site-plugin:2.1-SNAPSHOT]
urls[0] = file:/home/hudson/.m2/repository/org/apache/maven/plugins/maven-site-plugin/2.1-SNAPSHOT/maven-site-plugin-2.1-SNAPSHOT.jar
urls[1] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-utils/1.5.1/plexus-utils-1.5.1.jar
urls[2] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-xhtml/1.1.2-SNAPSHOT/doxia-module-xhtml-1.1.2-SNAPSHOT.jar
urls[3] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-core/1.1.2-SNAPSHOT/doxia-core-1.1.2-SNAPSHOT.jar
urls[4] = file:/home/hudson/.m2/repository/xerces/xercesImpl/2.8.1/xercesImpl-2.8.1.jar
urls[5] = file:/home/hudson/.m2/repository/xml-apis/xml-apis/1.3.03/xml-apis-1.3.03.jar
urls[6] = file:/home/hudson/.m2/repository/commons-lang/commons-lang/2.4/commons-lang-2.4.jar
urls[7] = file:/home/hudson/.m2/repository/commons-httpclient/commons-httpclient/3.1/commons-httpclient-3.1.jar
urls[8] = file:/home/hudson/.m2/repository/commons-logging/commons-logging/1.0.4/commons-logging-1.0.4.jar
urls[9] = file:/home/hudson/.m2/repository/commons-codec/commons-codec/1.2/commons-codec-1.2.jar
urls[10] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-apt/1.1.2-SNAPSHOT/doxia-module-apt-1.1.2-SNAPSHOT.jar
urls[11] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-xdoc/1.1.2-SNAPSHOT/doxia-module-xdoc-1.1.2-SNAPSHOT.jar
urls[12] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-fml/1.1.2-SNAPSHOT/doxia-module-fml-1.1.2-SNAPSHOT.jar
urls[13] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-decoration-model/1.1.2-SNAPSHOT/doxia-decoration-model-1.1.2-SNAPSHOT.jar
urls[14] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-site-renderer/1.1.2-SNAPSHOT/doxia-site-renderer-1.1.2-SNAPSHOT.jar
urls[15] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-i18n/1.0-beta-7/plexus-i18n-1.0-beta-7.jar
urls[16] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-velocity/1.1.7/plexus-velocity-1.1.7.jar
urls[17] = file:/home/hudson/.m2/repository/org/apache/velocity/velocity/1.5/velocity-1.5.jar
urls[18] = file:/home/hudson/.m2/repository/commons-collections/commons-collections/3.2/commons-collections-3.2.jar
urls[19] = file:/home/hudson/.m2/repository/oro/oro/2.0.8/oro-2.0.8.jar
urls[20] = file:/home/hudson/.m2/repository/org/apache/maven/shared/maven-doxia-tools/1.1-SNAPSHOT/maven-doxia-tools-1.1-SNAPSHOT.jar
urls[21] = file:/home/hudson/.m2/repository/commons-io/commons-io/1.4/commons-io-1.4.jar
urls[22] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-archiver/1.0-alpha-7/plexus-archiver-1.0-alpha-7.jar
urls[23] = file:/home/hudson/.m2/repository/org/mortbay/jetty/jetty/6.1.5/jetty-6.1.5.jar
urls[24] = file:/home/hudson/.m2/repository/org/mortbay/jetty/jetty-util/6.1.5/jetty-util-6.1.5.jar
urls[25] = file:/home/hudson/.m2/repository/org/mortbay/jetty/servlet-api-2.5/6.1.5/servlet-api-2.5-6.1.5.jar
[FATAL ERROR] Container realm = plexus.core
urls[0] = file:/opt/apache-maven-2.1.0/lib/maven-2.1.0-uber.jar
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.ExceptionInInitializerError
at org.apache.maven.plugin.javadoc.JavadocUtil.fetchURL(JavadocUtil.java:730)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.isValidJavadocLink(AbstractJavadocMojo.java:4680)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.addLinkArguments(AbstractJavadocMojo.java:3229)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.addStandardDocletOptions(AbstractJavadocMojo.java:3885)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.executeReport(AbstractJavadocMojo.java:1761)
at org.apache.maven.plugin.javadoc.JavadocReport.generate(JavadocReport.java:122)
at org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:164)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:337)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:138)
at org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:135)
at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:102)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:483)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:678)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:540)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:519)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:332)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:356)
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:597)
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.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.) (Caused by org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.))
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
at org.apache.commons.httpclient.HttpClient.<clinit>(HttpClient.java:66)
... 29 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.)
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397)
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
... 33 more
Caused by: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:385)
... 34 more
[INFO] ------------------------------------------------------------------------

{noformat} 		This bug only happens if I have maven-javadoc-plugin enabled. If I comment it out site generation works. The POM is not specifying a particular version so I am not sure which one it is using.

These bugs seem to report the same problem against other plugins:
http://jira.codehaus.org/browse/MOJO-1118
http://jira.codehaus.org/browse/MOJO-1101

Based on the error message, I checked the repository after successfully building without JavaDoc and it shows these versions of commons-logging were used:
1.0
1.0.3
1.0.4
1.1

The only SNAPSHOT dependency is 2.1-SNAPSHOT of the maven-site-plugin (to get around site generation bugs). I am using the -U during building.

{noformat}
# mvn site
...
[INFO] Generating "JavaDocs" report.
[FATAL ERROR] org.apache.maven.plugins.site.SiteMojo#execute() caused a linkage error (java.lang.ExceptionInInitializerError) and may be out-of-date. Check the realms:
[FATAL ERROR] Plugin realm = app0.child-container[org.apache.maven.plugins:maven-site-plugin:2.1-SNAPSHOT]
urls[0] = file:/home/hudson/.m2/repository/org/apache/maven/plugins/maven-site-plugin/2.1-SNAPSHOT/maven-site-plugin-2.1-SNAPSHOT.jar
urls[1] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-utils/1.5.1/plexus-utils-1.5.1.jar
urls[2] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-xhtml/1.1.2-SNAPSHOT/doxia-module-xhtml-1.1.2-SNAPSHOT.jar
urls[3] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-core/1.1.2-SNAPSHOT/doxia-core-1.1.2-SNAPSHOT.jar
urls[4] = file:/home/hudson/.m2/repository/xerces/xercesImpl/2.8.1/xercesImpl-2.8.1.jar
urls[5] = file:/home/hudson/.m2/repository/xml-apis/xml-apis/1.3.03/xml-apis-1.3.03.jar
urls[6] = file:/home/hudson/.m2/repository/commons-lang/commons-lang/2.4/commons-lang-2.4.jar
urls[7] = file:/home/hudson/.m2/repository/commons-httpclient/commons-httpclient/3.1/commons-httpclient-3.1.jar
urls[8] = file:/home/hudson/.m2/repository/commons-logging/commons-logging/1.0.4/commons-logging-1.0.4.jar
urls[9] = file:/home/hudson/.m2/repository/commons-codec/commons-codec/1.2/commons-codec-1.2.jar
urls[10] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-apt/1.1.2-SNAPSHOT/doxia-module-apt-1.1.2-SNAPSHOT.jar
urls[11] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-xdoc/1.1.2-SNAPSHOT/doxia-module-xdoc-1.1.2-SNAPSHOT.jar
urls[12] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-module-fml/1.1.2-SNAPSHOT/doxia-module-fml-1.1.2-SNAPSHOT.jar
urls[13] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-decoration-model/1.1.2-SNAPSHOT/doxia-decoration-model-1.1.2-SNAPSHOT.jar
urls[14] = file:/home/hudson/.m2/repository/org/apache/maven/doxia/doxia-site-renderer/1.1.2-SNAPSHOT/doxia-site-renderer-1.1.2-SNAPSHOT.jar
urls[15] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-i18n/1.0-beta-7/plexus-i18n-1.0-beta-7.jar
urls[16] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-velocity/1.1.7/plexus-velocity-1.1.7.jar
urls[17] = file:/home/hudson/.m2/repository/org/apache/velocity/velocity/1.5/velocity-1.5.jar
urls[18] = file:/home/hudson/.m2/repository/commons-collections/commons-collections/3.2/commons-collections-3.2.jar
urls[19] = file:/home/hudson/.m2/repository/oro/oro/2.0.8/oro-2.0.8.jar
urls[20] = file:/home/hudson/.m2/repository/org/apache/maven/shared/maven-doxia-tools/1.1-SNAPSHOT/maven-doxia-tools-1.1-SNAPSHOT.jar
urls[21] = file:/home/hudson/.m2/repository/commons-io/commons-io/1.4/commons-io-1.4.jar
urls[22] = file:/home/hudson/.m2/repository/org/codehaus/plexus/plexus-archiver/1.0-alpha-7/plexus-archiver-1.0-alpha-7.jar
urls[23] = file:/home/hudson/.m2/repository/org/mortbay/jetty/jetty/6.1.5/jetty-6.1.5.jar
urls[24] = file:/home/hudson/.m2/repository/org/mortbay/jetty/jetty-util/6.1.5/jetty-util-6.1.5.jar
urls[25] = file:/home/hudson/.m2/repository/org/mortbay/jetty/servlet-api-2.5/6.1.5/servlet-api-2.5-6.1.5.jar
[FATAL ERROR] Container realm = plexus.core
urls[0] = file:/opt/apache-maven-2.1.0/lib/maven-2.1.0-uber.jar
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.ExceptionInInitializerError
at org.apache.maven.plugin.javadoc.JavadocUtil.fetchURL(JavadocUtil.java:730)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.isValidJavadocLink(AbstractJavadocMojo.java:4680)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.addLinkArguments(AbstractJavadocMojo.java:3229)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.addStandardDocletOptions(AbstractJavadocMojo.java:3885)
at org.apache.maven.plugin.javadoc.AbstractJavadocMojo.executeReport(AbstractJavadocMojo.java:1761)
at org.apache.maven.plugin.javadoc.JavadocReport.generate(JavadocReport.java:122)
at org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:164)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:337)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:138)
at org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:135)
at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:102)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:483)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:678)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:540)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:519)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:332)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:356)
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:597)
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.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException:
org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible,
which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of
'org.apache.commons.logging.Log' visible, which is not allowed.) (Caused by org.apache.commons.logging.LogConfigurationException:
org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible,
which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of
'org.apache.commons.logging.Log' visible, which is not allowed.))
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
at org.apache.commons.httpclient.HttpClient.<clinit>(HttpClient.java:66)
... 29 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have
more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid
 class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.)
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397)
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
... 33 more
Caused by: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log'
visible, which is not allowed.
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:385)
... 34 more
[INFO] ------------------------------------------------------------------------

{noformat}
[ Permalink | « Hide ]
Vincent Siveton added a comment - 14/Sep/09 06:01 AM

Fixed in r814574, snapshot deployed


Vincent Siveton made changes - 14/Sep/09 06:01 AM
Assignee Vincent Siveton [ siveton ]
Resolution Fixed [ 1 ]
Status Open [ 1 ] Closed [ 6 ]
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