[
https://issues.apache.org/jira/browse/FELIX-4325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13827490#comment-13827490
]
Guillaume Nodet commented on FELIX-4325:
----------------------------------------
{code}
ERROR: Bundle org.fusesource.fabric.fabric-git [80] EventDispatcher: Error
during dispatch. (java.lang.NullPointerException)
java.lang.NullPointerException
at
org.apache.felix.scr.impl.manager.DependencyManager$MultipleDynamicCustomizer.prebind(DependencyManager.java:376)
at
org.apache.felix.scr.impl.manager.DependencyManager.prebind(DependencyManager.java:1392)
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.collectDependencies(AbstractComponentManager.java:1099)
at
org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:804)
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:827)
at
org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:907)
at
org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:871)
at
org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1477)
at
org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1398)
at
org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:1210)
at
org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:1148)
ERROR: Bundle org.fusesource.fabric.fabric-zookeeper [48] EventDispatcher:
Error during dispatch. (java.lang.NullPointerException)
java.lang.NullPointerException
at
org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.prebind(DependencyManager.java:954)
at
org.apache.felix.scr.impl.manager.DependencyManager.prebind(DependencyManager.java:1392)
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.collectDependencies(AbstractComponentManager.java:1099)
at
org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:804)
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:827)
at
org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:907)
at
org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:871)
at
org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1477)
at
org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1398)
at
org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:1210)
at
org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:1148)
at
org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1429)
at
org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:934)
at
org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:795)
at
org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:544)
at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4666)
at org.apache.felix.framework.Felix.registerService(Felix.java:3674)
at
org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:347)
at
org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:320)
at
org.apache.felix.cm.impl.ConfigurationManager.start(ConfigurationManager.java:318)
at
org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:645)
at org.apache.felix.framework.Felix.doActivateBundle(Felix.java:2387)
at org.apache.felix.framework.Felix$7.call(Felix.java:2325)
at org.apache.felix.framework.Felix$6.call(Felix.java:2208)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
{code}
> [DS] Synchronization issue when activating component
> ----------------------------------------------------
>
> Key: FELIX-4325
> URL: https://issues.apache.org/jira/browse/FELIX-4325
> Project: Felix
> Issue Type: Bug
> Components: Declarative Services (SCR)
> Affects Versions: scr-1.8.0
> Reporter: Guillaume Nodet
> Assignee: Guillaume Nodet
> Fix For: scr-1.8.2
>
>
> When activating a component, the AbstractComponentManager#activateInternal
> method checks some properties, then grab the lock and actually activate the
> component, leaving a gap between the check and the lock being acquired, which
> can result in the component being deactivated in the mean time, ultimately
> leading to NPE because m_tracker has been nulled.
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