[JIRA] (JENKINS-15344) Publishing Findbugs analysis report on a multi-module maven project results in ClassCastException

Sun, 30 Sep 2012 03:54:54 -0700

According to the stack trace, it seems to be a class loading problem with dom4j.
Using mvn dependency:tree, we can see that dom4j is used twice with 2 slightly different versions:

  • dom4j:dom4j:jar:1.6.1:compile is a transitive dependency of org.jvnet.hudson.plugins.findbugs:library:jar:2.0.1-SNAPSHOT
  • org.jvnet.hudson.dom4j:dom4j:jar:1.6.1-hudson-3:provided is a transitive dependency of org.jenkins-ci.main:jenkins-core:jar:1.409:provided

In FindBugsParser.readXml(), where the bug occurs, you change the context class loader. And I can see in the stack trace that an async task is launched in a ThreadPoolExecutor, so the thread in the executor is certainly not using the class loader you tried to impose in FindBugsParser.readXml(), isn't it ?
Maybe a quick-and-dirty workaround would be to explicitly exclude dom4j:dom4j:jar:1.6.1 when configuring the findbugs dependency ?
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