Details
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Bug
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Status: Resolved
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Major
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Resolution: Won't Fix
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2.15.2
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None
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None
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Spring 4.1.5.RELEASE
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Unknown
Description
Scenario:
- used Camel spring with <camelContext id="flows" xmlns="http://camel.apache.org/schema/spring" />
- camelContext is used by some internal bean to expose an api to register routes for other thread
- Spring hasn't finished initializing beans from the spring context contains Spring Camel context
- different thread starts using an api - calling indirectly Spring Camel context to register routes
- Camel context in order to add route get locks: camel context, spring singleton lock (due to spring registry), but initial thread starting Spring context get lock: spring singleton lock, camel context... causing deadlock.
Workaround:
- create and start DefaultCamelContext without Spring Registry.
Found one Java-level deadlock: ============================= "localhost-startStop-6": waiting to lock monitor 0xf350f544 (object 0x7e04a668, a org.apache.camel.spring.SpringCamelContext), which is held by "lifecycleWorker6" "lifecycleWorker6": waiting to lock monitor 0xf33ecc84 (object 0x7f01dc70, a java.util.concurrent.ConcurrentHashMap), which is held by "localhost-startStop-6" Java stack information for the threads listed above: =================================================== "localhost-startStop-6": at org.apache.camel.impl.DefaultCamelContext.addRouteDefinitions(DefaultCamelContext.java:767) - waiting to lock <0x7e04a668> (a org.apache.camel.spring.SpringCamelContext) at org.apache.camel.builder.RouteBuilder.populateRoutes(RouteBuilder.java:397) at org.apache.camel.builder.RouteBuilder.addRoutesToCamelContext(RouteBuilder.java:311) at org.apache.camel.impl.DefaultCamelContext$1.call(DefaultCamelContext.java:731) at org.apache.camel.impl.DefaultCamelContext$1.call(DefaultCamelContext.java:728) at org.apache.camel.impl.DefaultCamelContext.doWithDefinedClassLoader(DefaultCamelContext.java:2486) at org.apache.camel.impl.DefaultCamelContext.addRoutes(DefaultCamelContext.java:728) at com.blablabla.BlaBlaRegistrar.registerBlaBlas(BlaBlaRegistrar.java:50) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:349) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:300) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:133) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:408) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1558) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) - locked <0x7f01dc70> (a java.util.concurrent.ConcurrentHashMap) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) - locked <0x7d8b79b0> (a java.lang.Object) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4887) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5381) - locked <0x7b9bde78> (a org.apache.catalina.core.StandardContext) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) - locked <0x7b9bde78> (a org.apache.catalina.core.StandardContext) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:977) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1655) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:722) "lifecycleWorker6": at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:188) - waiting to lock <0x7f01dc70> (a java.util.concurrent.ConcurrentHashMap) at org.springframework.beans.factory.support.AbstractBeanFactory.isTypeMatch(AbstractBeanFactory.java:487) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:436) at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:412) at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:519) at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:512) at org.springframework.context.support.AbstractApplicationContext.getBeansOfType(AbstractApplicationContext.java:1052) at org.springframework.beans.factory.BeanFactoryUtils.beansOfTypeIncludingAncestors(BeanFactoryUtils.java:228) at org.apache.camel.spring.spi.ApplicationContextRegistry.findByTypeWithName(ApplicationContextRegistry.java:85) at org.apache.camel.impl.PropertyPlaceholderDelegateRegistry.findByTypeWithName(PropertyPlaceholderDelegateRegistry.java:70) at org.apache.camel.processor.interceptor.DefaultChannel.getOrCreateBacklogDebugger(DefaultChannel.java:372) at org.apache.camel.processor.interceptor.DefaultChannel.initChannel(DefaultChannel.java:235) at org.apache.camel.model.ProcessorDefinition.wrapChannel(ProcessorDefinition.java:273) at org.apache.camel.model.ProcessorDefinition.createOutputsProcessor(ProcessorDefinition.java:440) at org.apache.camel.model.ProcessorDefinition.createOutputsProcessor(ProcessorDefinition.java:163) at org.apache.camel.model.OnExceptionDefinition.addRoutes(OnExceptionDefinition.java:193) at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:1025) at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:185) at org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:841) at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:2895) at org.apache.camel.impl.DefaultCamelContext.addRouteDefinitions(DefaultCamelContext.java:775) - locked <0x7e04a668> (a org.apache.camel.spring.SpringCamelContext) at org.apache.camel.builder.RouteBuilder.populateRoutes(RouteBuilder.java:397) at org.apache.camel.builder.RouteBuilder.addRoutesToCamelContext(RouteBuilder.java:311) at org.apache.camel.impl.DefaultCamelContext$1.call(DefaultCamelContext.java:731) at org.apache.camel.impl.DefaultCamelContext$1.call(DefaultCamelContext.java:728) at org.apache.camel.impl.DefaultCamelContext.doWithDefinedClassLoader(DefaultCamelContext.java:2486) at org.apache.camel.impl.DefaultCamelContext.addRoutes(DefaultCamelContext.java:728) at com.blablabla.BlaBlaRegistrar.registerBlaBlas(BlaBlaRegistrar.java:50) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:722) Found 1 deadlock.