ConcurrentModificationException when concurrent threads try to engage the
Addressing module
-------------------------------------------------------------------------------------------
Key: AXIS2-1053
URL: http://issues.apache.org/jira/browse/AXIS2-1053
Project: Apache Axis 2.0 (Axis2)
Issue Type: Bug
Components: client-api
Environment: Windows XP SP2, mac OS X 10.4.7, jdk 1.5.0_06, axis2
nightly build 17/08/06
Reporter: Michele Mazzucco
Priority: Critical
Attachments: test.tar.gz
Multiple sender objects are used to concurrently send (asynchronous) messages.
The threads are created using a ExecutorService object and each thread creates
a ServiceClient using the provided configuration, which is:
ConfigurationContext configurationContext =
ConfigurationContextFactory.createConfigurationContextFromFileSystem(null,
null);
HttpClient httpClient = new HttpClient(new
MultiThreadedHttpConnectionManager());
configurationContext.setProperty(HTTPConstants.REUSE_HTTP_CLIENT,
Boolean.TRUE);
configurationContext.setProperty(HTTPConstants.CACHED_HTTP_CLIENT,
httpClient);
The problem arises when the threads try to (concurrently) engage the Addressing
module:
Exception in thread "pool-1-thread-2" java.util.ConcurrentModificationException
[java] at
java.util.AbstractList$Itr.checkForComodification(AbstractList.java:449)
[java] at java.util.AbstractList$Itr.next(AbstractList.java:420)
[java] at org.apache.axis2.engine.Phase.addHandler(Phase.java:136)
[java] at
org.apache.axis2.phaseresolver.PhaseHolder.addHandler(PhaseHolder.java:64)
[java] at
org.apache.axis2.phaseresolver.PhaseResolver.engageModuleToOperation(PhaseResolver.java:191)
[java] at
org.apache.axis2.description.AxisOperation.engageModuleToOperation(AxisOperation.java:154)
[java] at
org.apache.axis2.description.AxisOperation.engageModule(AxisOperation.java:128)
[java] at
org.apache.axis2.description.AxisService.engageModule(AxisService.java:479)
[java] at
org.apache.axis2.client.ServiceClient.engageModule(ServiceClient.java:271)
[java] at ncl.qosp.test.functional.client.Sender.run(Sender.java:134)
[java] at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
[java] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
[java] at java.lang.Thread.run(Thread.java:613)
Please find attached a sample application (a readme file including the build
instructions is probvided) to reproduce the problem.
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