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From "Edwin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CXF-6245) Loading non-existent class org.apache.cxf.xmlbeans.XmlBeansWrapperHelper in WrapperClassOutInterceptor is causing performance issues
Date Sat, 07 Feb 2015 00:03:34 GMT
Edwin created CXF-6245:
--------------------------

             Summary: Loading non-existent class org.apache.cxf.xmlbeans.XmlBeansWrapperHelper
in WrapperClassOutInterceptor is causing performance issues
                 Key: CXF-6245
                 URL: https://issues.apache.org/jira/browse/CXF-6245
             Project: CXF
          Issue Type: Bug
          Components: JAX-WS Runtime
    Affects Versions: 2.7.14
            Reporter: Edwin


We have an application with quite a few jars in the classpath.  Since the class org.apache.cxf.xmlbeans.XmlBeansWrapperHelper
doesn't exist, the loading of this class causes the class loader to search the entire classpath
which means scanning each and every jar.  This is causing performance issues for us where
under heavy load where several threads get blocked while one thread is searching all the jars
in the classpath.  

Here is the thread which is searching the classpath:

   java.lang.Thread.State: RUNNABLE
        at java.util.zip.ZipFile.getEntry(Native Method)
        at java.util.zip.ZipFile.getEntry(ZipFile.java:306)
        - locked <0x000000074069ee30> (a java.util.jar.JarFile)
        at java.util.jar.JarFile.getEntry(JarFile.java:226)
        at weblogic.utils.classloaders.ZipClassFinder.getSource(ZipClassFinder.java:39)
        at weblogic.utils.classloaders.JarClassFinder.getSource(JarClassFinder.java:50)
        at weblogic.utils.classloaders.AbstractClassFinder.getClassSource(AbstractClassFinder.java:31)
        at weblogic.utils.classloaders.MultiClassFinder.getClassSource(MultiClassFinder.java:59)
        at weblogic.utils.classloaders.MultiClassFinder.getClassSource(MultiClassFinder.java:59)
        at weblogic.utils.classloaders.MultiClassFinder.getClassSource(MultiClassFinder.java:59)
        at weblogic.utils.classloaders.MultiClassFinder.getClassSource(MultiClassFinder.java:59)
        at weblogic.application.utils.CompositeWebAppFinder.getClassSource(CompositeWebAppFinder.java:88)
        at weblogic.utils.classloaders.MultiClassFinder.getClassSource(MultiClassFinder.java:59)
        at weblogic.utils.classloaders.MultiClassFinder.getClassSource(MultiClassFinder.java:59)
        at weblogic.utils.classloaders.CodeGenClassFinder.getClassSource(CodeGenClassFinder.java:28)
        at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:329)
        - locked <0x0000000740a46f30> (a weblogic.utils.classloaders.ChangeAwareClassLoader)
        at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:302)
        at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:64)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
        - locked <0x0000000740a46f30> (a weblogic.utils.classloaders.ChangeAwareClassLoader)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
        at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:180)
        at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:43)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:190)
        at org.apache.cxf.jaxws.interceptors.WrapperClassOutInterceptor.handleMessage(WrapperClassOutInterceptor.java:91)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)



and here is one of the many blocked threads:

"[ACTIVE] ExecuteThread: '21' for queue: 'weblogic.kernel.Default (self-tuning)'" daemon prio=10
tid=0x000000001b424800 nid=0x18b7 waiting for monitor entry [0x00002b7d62597000]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:190)
        at org.apache.cxf.jaxws.interceptors.WrapperClassOutInterceptor.handleMessage(WrapperClassOutInterceptor.java:91)
        at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)



Is it possible to remove the code from org.apache.cxf.xmlbeans.XmlBeansWrapperHelper which
is trying to load the non-existent class org.apache.cxf.xmlbeans.XmlBeansWrapperHelper?



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