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https://issues.apache.org/jira/browse/AXIS-2909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16613988#comment-16613988
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GWR commented on AXIS-2909:
---------------------------
thanks, useful info!
and source code is here:
git clone https://github.com/apache/axis1-java.git apache/axis1-java
> ConcurrentModificationException when running under Java 1.8.0_20 or later
> -------------------------------------------------------------------------
>
> Key: AXIS-2909
> URL: https://issues.apache.org/jira/browse/AXIS-2909
> Project: Axis
> Issue Type: Bug
> Components: Serialization/Deserialization
> Affects Versions: 1.4
> Environment: java full version "1.8.0_20-b26"
> Reporter: Kim Albertsson
> Assignee: Andreas Veithen
> Priority: Critical
> Fix For: 1.4.1
>
> Attachments: axis-concurrent-mod.stack-trace, diff.txt
>
> Original Estimate: 0h
> Remaining Estimate: 0h
>
> Java 8u20 introduced a change in how Collections.sort is implemented. See
> http://bugs.java.com/view_bug.do?bug_id=8032636 and
> http://bugs.java.com/view_bug.do?bug_id=8030848.
> The sorting is now deferred to the specific list implementation which can
> operate directly on the underlying data structure without making a defensive
> copy beforehand. This can cause a java.util.ConcurrentModificationException
> to occur.
> The error can be reproduced by compiling axis-1.4.1-SNAPSHOT using java
> 1.8.0_20 or later and running the maven test suite (mvn test). The error does
> not manifest every single run, but I have never had to run the tests more
> than 3 times to reproduce. The test that fails is
> test.concurrency.TestApplicationScope.
> The issue originates in
> org.apache.axis.description.JavaServiceDesc.getOperationsByQName where an
> unsynchronized call to Collections.sort is made. Synchronizing over the
> sorted array resolves the issue.
> A working patch that has been tested in the test suite is appended in
> diff.txt.
> The stack trace from the axis test-suite is appended below. Do note however
> that this stack trace does not show the actual error (The original error is
> caught and rethrown). To get the stack trace where the Collections.sort call
> is made you can run the specific test and attach the jdb configured to catch
> all java.util.ConcurrentModificationExceptions.
> The stack trace from my jdb session is appended as
> axis-concurrent-mod.stack-trace. It was generated from an apache tomcat
> instance running a webservice relying on axis.
> AxisFault
> faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
> faultSubcode:
> faultString: java.util.ConcurrentModificationException
> faultActor:
> faultNode:
> faultDetail:
>
> {http://xml.apache.org/axis/}stackTrace:java.util.ConcurrentModificationException
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
> at java.lang.Class.newInstance(Class.java:442)
> at
> org.apache.axis.encoding.ser.BeanDeserializer.<init>(BeanDeserializer.java:104)
> at
> org.apache.axis.encoding.ser.BeanDeserializerFactory.getGeneralPurpose(BeanDeserializerFactory.java:89)
> at
> org.apache.axis.encoding.ser.BaseDeserializerFactory.getDeserializerAs(BaseDeserializerFactory.java:89)
> at
> org.apache.axis.encoding.DeserializationContext.getDeserializer(DeserializationContext.java:484)
> at
> org.apache.axis.encoding.DeserializationContext.getDeserializerForType(DeserializationContext.java:567)
> at
> org.apache.axis.message.SOAPFaultDetailsBuilder.onStartChild(SOAPFaultDetailsBuilder.java:157)
> at
> org.apache.axis.encoding.DeserializationContext.startElement(DeserializationContext.java:1052)
> at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown
> Source)
> at
> org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown
> Source)
> at
> org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown
> Source)
> at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
> Source)
> at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
> Source)
> at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
> at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
> at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
> at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
> at
> org.apache.axis.encoding.DeserializationContext.parse(DeserializationContext.java:241)
> at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:696)
> at org.apache.axis.Message.getSOAPEnvelope(Message.java:435)
> at
> org.apache.axis.handlers.soap.MustUnderstandChecker.invoke(MustUnderstandChecker.java:62)
> at org.apache.axis.client.AxisClient.invoke(AxisClient.java:206)
> at org.apache.axis.client.Call.invokeEngine(Call.java:2782)
> at org.apache.axis.client.Call.invoke(Call.java:2765)
> at org.apache.axis.client.Call.invoke(Call.java:2443)
> at org.apache.axis.client.Call.invoke(Call.java:2366)
> at org.apache.axis.client.Call.invoke(Call.java:2391)
> at
> test.concurrency.TestApplicationScope$TestRunnable.run(TestApplicationScope.java:80)
> at java.lang.Thread.run(Thread.java:745)
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