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https://jira.codehaus.org/browse/DOXIASITETOOLS-69?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=365637#comment-365637
]
Christopher Tubbs commented on DOXIASITETOOLS-69:
-------------------------------------------------
Saw this, too, using Maven 3.2.3 and maven-plugin-plugin versions 3.2, 3.3, and
3.4.
> ConcurrentModificationException when using site:run
> ---------------------------------------------------
>
> Key: DOXIASITETOOLS-69
> URL: https://jira.codehaus.org/browse/DOXIASITETOOLS-69
> Project: Maven Doxia Sitetools
> Issue Type: Bug
> Components: Site renderer
> Affects Versions: 1.2
> Environment: Maven 2.2.1 with maven-site-plugin 3.0
> Reporter: Christof Schöll
> Attachments: testmvnsite.zip
>
>
> When using maven with site:run I get the following exception, which seem to
> originate from the Doxia Site Renderer
> {noformat}2012-04-04 12:27:07.653:WARN::/css/maven-theme.css
> java.util.ConcurrentModificationException
> at
> java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
> at java.util.AbstractList$Itr.next(AbstractList.java:343)
> at
> org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.locateDocumentFiles(DefaultSiteRenderer.java:149)
> at
> org.apache.maven.plugins.site.webapp.DoxiaFilter.doFilter(DoxiaFilter.java:174)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
> at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:440)
> at
> org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:326)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:926)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
> at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
> 2012-04-04 12:27:07.656:WARN::/images/logos/maven-feather.png
> java.util.ConcurrentModificationException
> at
> java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
> at java.util.AbstractList$Itr.next(AbstractList.java:343)
> at
> org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.locateDocumentFiles(DefaultSiteRenderer.java:149)
> at
> org.apache.maven.plugins.site.webapp.DoxiaFilter.doFilter(DoxiaFilter.java:174)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
> at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:440)
> at
> org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:326)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:926)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
> at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582){noformat}
> The following source code in
> org.apache.maven.doxia.siterenderer.DefaultSiteRenderer (line 149) seems to
> contain the problem:
> {code:java}149 for ( File siteDirectory :
> siteRenderingContext.getSiteDirectories() )
> 150 {
> 151 if ( siteDirectory.exists() )
> 152 {
> 153 Collection<SiteModule> modules =
> siteModuleManager.getSiteModules();
> 154 for ( SiteModule module : modules )
> 155 {
> 156 File moduleBasedir = new File( siteDirectory,
> module.getSourceDirectory() );
> 157
> 158 if ( moduleExcludes != null &&
> moduleExcludes.containsKey( module.getParserId() ) )
> 159 {
> 160 addModuleFiles( moduleBasedir, module,
> moduleExcludes.get( module.getParserId() ),
> 161 files );
> 162 }
> 163 else
> 164 {
> 165 addModuleFiles( moduleBasedir, module, null,
> files );
> 166 }
> 167 }
> 168 }
> 169 }{code}
> Iterating over a clone of the siteDirectories should make this code much more
> robust and should generally fix this problem.
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