Chetan Mehrotra created FELIX-3701:
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Summary: Intermittent CNFE with embedded jars in Fragment Bundles
Key: FELIX-3701
URL: https://issues.apache.org/jira/browse/FELIX-3701
Project: Felix
Issue Type: Bug
Components: Framework
Affects Versions: framework-4.0.2
Reporter: Chetan Mehrotra
Priority: Minor
In our Sling based OSGi application we are observing intermittent
ClassNotFoundException for classes which are present in a jar embedded in
Fragment bundle. Below are the details about the scenario
1. Host bundle BundleA com.day.crx.sling.server [52]
2. It has two fragment bundles attached.
- FragBundle1 - com.day.crx.crx-auth-ldap
- FragBundle2 - org.jcrutil.aws
3. FragBundle2 - Has some embedded jars referred in the classpath
- FragJar2-1 - aws-java-sdk-1.3.11.jar
- FragJar2-2 - httpclient-4.2-beta1.jar
4. There is a DS Component in BundleA which on activate tries to create an
instance of class which is present in FragJar2-1
Now the issue is at times on clean start we get a CNFE at #4. On getting the
Felix debug logs following things were observed
1. The logs report that INFO: Bundle BundleA [52] Class path entry not found:
FragJar2-1.jar
2. The above entries are not observed if CNFE is not thrown
3. If I try to debug the code the issue goes away which indicates that its
possible a race condition issue
4. In case the issue is seen and I see the fragment bundle dir in the felix
folder the fragment jar is NOT exploded i.e. no bundle.jar-embedded directory
5. Once the issue is seen it does not go away in restart
6. The issue was not seen in 3.0.x releases
7. Exception seen is [1]
[1]
05.10.2012 12:03:19.362 *ERROR* [FelixStartLevel] com.day.crx.sling.server
[com.day.crx.sling.server.impl.jmx.ManagedRepository] The activate method has
thrown an exception (java.lang.NoClassDefFoundError:
com/amazonaws/services/s3/model/S3ObjectSummary)
java.lang.NoClassDefFoundError: com/amazonaws/services/s3/model/S3ObjectSummary
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at
org.apache.jackrabbit.core.config.SimpleBeanFactory.newInstance(SimpleBeanFactory.java:30)
at
org.apache.jackrabbit.core.config.BeanConfig.newInstance(BeanConfig.java:191)
at
org.apache.jackrabbit.core.config.RepositoryConfigurationParser$4.getDataStore(RepositoryConfigurationParser.java:997)
at
org.apache.jackrabbit.core.config.RepositoryConfig.getDataStore(RepositoryConfig.java:1072)
at
org.apache.jackrabbit.core.RepositoryImpl.<init>(RepositoryImpl.java:279)
at com.day.crx.core.CRXRepositoryImpl.<init>(CRXRepositoryImpl.java:307)
at com.day.crx.core.CRXRepositoryImpl.create(CRXRepositoryImpl.java:262)
at com.day.crx.core.CRXRepositoryImpl.create(CRXRepositoryImpl.java:245)
at
com.day.crx.sling.server.impl.jmx.ManagedRepository.activate(ManagedRepository.java:169)
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.apache.felix.scr.impl.helper.BaseMethod.invokeMethod(BaseMethod.java:227)
at
org.apache.felix.scr.impl.helper.BaseMethod.access$500(BaseMethod.java:38)
at
org.apache.felix.scr.impl.helper.BaseMethod$Resolved.invoke(BaseMethod.java:591)
at
org.apache.felix.scr.impl.helper.BaseMethod.invoke(BaseMethod.java:472)
at
org.apache.felix.scr.impl.helper.ActivateMethod.invoke(ActivateMethod.java:146)
at
org.apache.felix.scr.impl.manager.ImmediateComponentManager.createImplementationObject(ImmediateComponentManager.java:226)
at
org.apache.felix.scr.impl.manager.ImmediateComponentManager.createComponent(ImmediateComponentManager.java:118)
at
org.apache.felix.scr.impl.manager.DelayedComponentManager.createRealComponent(DelayedComponentManager.java:95)
at
org.apache.felix.scr.impl.manager.AbstractComponentManager$Registered.getService(AbstractComponentManager.java:1296)
at
org.apache.felix.scr.impl.manager.DelayedComponentManager.getService(DelayedComponentManager.java:88)
at
org.apache.felix.framework.ServiceRegistrationImpl.getFactoryUnchecked(ServiceRegistrationImpl.java:308)
at
org.apache.felix.framework.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:219)
at
org.apache.felix.framework.ServiceRegistry.getService(ServiceRegistry.java:310)
at org.apache.felix.framework.Felix.getService(Felix.java:3420)
at
org.apache.felix.framework.BundleContextImpl.getService(BundleContextImpl.java:468)
at
org.osgi.util.tracker.ServiceTracker.addingService(ServiceTracker.java:450)
at
org.apache.aries.jmx.whiteboard.Activator$MBeanTracker.addingService(Activator.java:101)
at
org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:980)
at
org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:906)
at
org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:262)
at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:234)
at
org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:941)
at
org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:932)
at
org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:793)
at
org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:543)
at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4260)
at org.apache.felix.framework.Felix.registerService(Felix.java:3275)
at
org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:346)
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:456)
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.registerComponentService(AbstractComponentManager.java:508)
at
org.apache.felix.scr.impl.manager.AbstractComponentManager$Unsatisfied.activate(AbstractComponentManager.java:1157)
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:334)
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:158)
at
org.apache.felix.scr.impl.config.ImmediateComponentHolder.enableComponents(ImmediateComponentHolder.java:313)
at
org.apache.felix.scr.impl.BundleComponentActivator.loadDescriptor(BundleComponentActivator.java:241)
at
org.apache.felix.scr.impl.BundleComponentActivator.initialize(BundleComponentActivator.java:147)
at
org.apache.felix.scr.impl.BundleComponentActivator.<init>(BundleComponentActivator.java:111)
at
org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:274)
at org.apache.felix.scr.impl.Activator.bundleChanged(Activator.java:192)
at
org.apache.felix.framework.util.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:868)
at
org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:789)
at
org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:514)
at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4244)
at org.apache.felix.framework.Felix.startBundle(Felix.java:1923)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1191)
at
org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:295)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassNotFoundException: *** Class
'com.amazonaws.services.s3.model.S3ObjectSummary' was not found. Bundle
com.day.crx.sling.server [52] does not import package
'com.amazonaws.services.s3.model', nor is the package exported by any other
bundle or available from the system class loader. ***
at
org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1857)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 62 more
Caused by: java.lang.ClassNotFoundException:
com.amazonaws.services.s3.model.S3ObjectSummary not found by
com.day.crx.sling.server [52]
at
org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1460)
at
org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:72)
at
org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1843)
... 63 more
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