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Posted to issues@camel.apache.org by "Claus Ibsen (JIRA)" <ji...@apache.org> on 2013/11/08 15:53:17 UTC
[jira] [Resolved] (CAMEL-6941) ConcurrentModificationException
while shutting down camel
[ https://issues.apache.org/jira/browse/CAMEL-6941?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Claus Ibsen resolved CAMEL-6941.
--------------------------------
Resolution: Fixed
> ConcurrentModificationException while shutting down camel
> ---------------------------------------------------------
>
> Key: CAMEL-6941
> URL: https://issues.apache.org/jira/browse/CAMEL-6941
> Project: Camel
> Issue Type: Bug
> Components: camel-core
> Affects Versions: 2.11.0
> Environment: jdk-1.7.0_45
> Reporter: Robin Kåveland Hansen
> Assignee: Claus Ibsen
> Priority: Minor
> Fix For: 2.11.3, 2.12.2, 2.13.0
>
>
> Observed the following stacktrace while shutting down camel:
> {code}
> org.apache.camel.impl.DefaultExecutorServiceManager.awaitTermination()#401: Waited 4.017 seconds for ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda to terminate...
> org.apache.camel.impl.DefaultExecutorServiceManager.awaitTermination()#401: Waited 6.027 seconds for ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda to terminate...
> org.apache.camel.impl.DefaultExecutorServiceManager.awaitTermination()#401: Waited 8.037 seconds for ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda to terminate...
> org.apache.camel.impl.DefaultExecutorServiceManager.awaitTermination()#401: Waited 10.008 seconds for ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda to terminate...
> g org.apache.camel.impl.DefaultExecutorServiceManager.doShutdown()#301: Forcing shutdown of ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda due first await termination elapsed.
> org.apache.camel.impl.DefaultExecutorServiceManager.awaitTermination()#401: Waited 2.008 seconds for ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda to terminate...
> org.apache.camel.impl.DefaultExecutorServiceManager.awaitTermination()#401: Waited 4.018 seconds for ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda to terminate...
> org.apache.camel.impl.DefaultExecutorServiceManager.awaitTermination()#401: Waited 6.028 seconds for ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda to terminate...
> org.apache.camel.impl.DefaultExecutorServiceManager.awaitTermination()#401: Waited 8.039 seconds for ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda to terminate...
> org.apache.camel.impl.DefaultExecutorServiceManager.awaitTermination()#401: Waited 10.008 seconds for ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda to terminate...
> g org.apache.camel.impl.DefaultExecutorServiceManager.doShutdown()#305: Cannot completely force shutdown of ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda due second await termination elapsed.
> org.apache.camel.impl.DefaultExecutorServiceManager.doShutdown()#318: Shutdown of ExecutorService: java.util.concurrent.ThreadPoolExecutor@33c4bcda is shutdown: true and terminated: false took: 20.018 seconds.
> g org.apache.camel.impl.DefaultCamelContext.shutdownServices()#1771: Error occurred while shutting down service: org.apache.camel.impl.DefaultExecutorServiceManager@37285252. This exception will be ignored.
> g Caused by java.util.ConcurrentModificationException - null
> g at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
> g at java.util.AbstractList$Itr.next(AbstractList.java:343)
> g at org.apache.camel.impl.DefaultExecutorServiceManager.doShutdown(DefaultExecutorServiceManager.java:442)
> g at org.apache.camel.support.ServiceSupport.shutdown(ServiceSupport.java:158)
> g at org.apache.camel.util.ServiceHelper.stopAndShutdownService(ServiceHelper.java:166)
> g at org.apache.camel.impl.DefaultCamelContext.shutdownServices(DefaultCamelContext.java:1766)
> g at org.apache.camel.impl.DefaultCamelContext.doStop(DefaultCamelContext.java:1681)
> g at org.apache.camel.support.ServiceSupport.stop(ServiceSupport.java:92)
> g at org.apache.camel.core.xml.AbstractCamelContextFactoryBean.destroy(AbstractCamelContextFactoryBean.java:432)
> g at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:211)
> g at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:500)
> g at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:476)
> g at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:445)
> g at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1090)
> g at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1064)
> g at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1010)
> g at org.apache.camel.spring.Main.doStop(Main.java:152)
> g at org.apache.camel.support.ServiceSupport.stop(ServiceSupport.java:92)
> g at org.apache.camel.main.MainSupport$HangupInterceptor.run(MainSupport.java:82)
> org.apache.camel.impl.DefaultCamelContext.doStop()#1695: Uptime 35 days 23 hours
> org.apache.camel.impl.DefaultCamelContext.doStop()#1696: Apache Camel 2.11.0 (CamelContext: camel-activemq) is shutdown in 51.196 seconds
> {code}
> I haven't seen this before but it seems to me that there must be more than one thread doing something to DefaultExecutorServiceManager.executorServices (ArrayList) at the same time.
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