4 Replies Latest reply on Feb 10, 2006 4:14 PM by kabish

Urgent:ClassCircularityError

sasaa Mar 22, 2004 4:12 PM

Hi All,

We have written an application using JBoss- version 3.2.2RC3 with Axis 1.1 and Java version j2sdk1.4.1_02. We are running concurrent tests on this application and we are getting ClassCircularity error in different places in our code. For every run, we get this error in some different place. ( I have provided a trace for one of these instances).

I have looked up the forum and understand that there was some bug in the way the class loaders were getting used in Java. (bug #4699981).

Has this problem been fixed in Java or a workaround has been introduced in JBoss?

This error is posing very serious problem for us, as it prevents the application to run beyond this point.

Any help will be highly appreciated.

thanks

-----------------------
Here is the exception:
14:15:52,466 ERROR [STDERR] java.lang.ClassCircularityError: boolean_Helper
14:15:52,466 ERROR [STDERR] at java.lang.Class.forName0(Native Method)
14:15:52,486 ERROR [STDERR] at java.lang.Class.forName(Class.java:219)
14:15:52,486 ERROR [STDERR] at org.apache.axis.utils.ClassUtils$2.run(ClassU
tils.java:193)
14:15:52,486 ERROR [STDERR] at java.security.AccessController.doPrivileged(N
ative Method)
14:15:52,486 ERROR [STDERR] at org.apache.axis.utils.ClassUtils.loadClass(Cl
assUtils.java:171)
14:15:52,486 ERROR [STDERR] at org.apache.axis.utils.ClassUtils.forName(Clas
sUtils.java:112)
14:15:52,486 ERROR [STDERR] at org.apache.axis.encoding.ser.BaseFactory.getM
ethod(BaseFactory.java:107)
14:15:52,506 ERROR [STDERR] at org.apache.axis.encoding.ser.BaseDeserializer
Factory.getGetDeserializer(BaseDeserializerFactory.java:264)
14:15:52,506 ERROR [STDERR] at org.apache.axis.encoding.ser.BaseDeserializer
Factory.getSpecialized(BaseDeserializerFactory.java:173)
14:15:52,506 ERROR [STDERR] at org.apache.axis.encoding.ser.BaseDeserializer
Factory.getDeserializerAs(BaseDeserializerFactory.java:117)
14:15:52,506 ERROR [STDERR] at org.apache.axis.encoding.ser.SimpleDeserializ
erFactory.getDeserializerAs(SimpleDeserializerFactory.java:107)
14:15:52,506 ERROR [STDERR] at org.apache.axis.encoding.DeserializationConte
xtImpl.getDeserializer(DeserializationContextImpl.java:466)
14:15:52,536 ERROR [STDERR] at org.apache.axis.encoding.DeserializationConte
xtImpl.getDeserializerForType(DeserializationContextImpl.java:481)
14:15:52,536 ERROR [STDERR] at org.apache.axis.encoding.ser.BeanDeserializer
.getDeserializer(BeanDeserializer.java:458)
14:15:52,536 ERROR [STDERR] at org.apache.axis.encoding.ser.BeanDeserializer
.onStartChild(BeanDeserializer.java:278)
14:15:52,536 ERROR [STDERR] at org.apache.axis.encoding.DeserializationConte
xtImpl.startElement(DeserializationContextImpl.java:963)
14:15:52,536 ERROR [STDERR] at org.apache.axis.message.SAX2EventRecorder.rep
lay(SAX2EventRecorder.java:198)
14:15:52,536 ERROR [STDERR] at org.apache.axis.message.MessageElement.publis
hToHandler(MessageElement.java:722)
14:15:52,546 ERROR [STDERR] at org.apache.axis.encoding.DeserializerImpl.sta
rtElement(DeserializerImpl.java:404)
14:15:52,546 ERROR [STDERR] at org.apache.axis.encoding.ser.BeanDeserializer
.startElement(BeanDeserializer.java:165)
14:15:52,546 ERROR [STDERR] at org.apache.axis.encoding.DeserializationConte
xtImpl.startElement(DeserializationContextImpl.java:976)
14:15:52,546 ERROR [STDERR] at org.apache.axis.message.SAX2EventRecorder.rep
lay(SAX2EventRecorder.java:198)
14:15:52,546 ERROR [STDERR] at org.apache.axis.message.MessageElement.publis
hToHandler(MessageElement.java:722)
14:15:52,546 ERROR [STDERR] at org.apache.axis.message.RPCElement.deserializ
e(RPCElement.java:323)
14:15:52,576 ERROR [STDERR] at org.apache.axis.message.RPCElement.getParams(
RPCElement.java:347)
14:15:52,576 ERROR [STDERR] at org.apache.axis.client.Call.invoke(Call.java:
2272)
14:15:52,576 ERROR [STDERR] at org.apache.axis.client.Call.invoke(Call.java:
2171)
14:15:52,576 ERROR [STDERR] at org.apache.axis.client.Call.invoke(Call.java:
2196)
14:15:52,576 ERROR [STDERR] at com.uniteller.switchcore.isc.impl.Communicato
r.execute(Communicator.java:255)
14:15:52,576 ERROR [STDERR] at com.uniteller.switchcore.isc.impl.Communicato
r.run(Communicator.java:93)
14:15:52,596 ERROR [STDERR] at java.lang.Thread.run(Thread.java:534)

1. Re: Urgent:ClassCircularityError

starksm64 Mar 23, 2004 1:31 AM (in response to sasaa)

You'll have to upgrade to jboss-3.2.3 to find a fix. A workaround would be to load all classes in a single thread on startup.
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2. Re: Urgent:ClassCircularityError

sasaa Mar 24, 2004 10:59 AM (in response to sasaa)

Thanks for that!

It seems to work with Jboss 3.2.3
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3. Re: Urgent:ClassCircularityError

oaadland Jun 23, 2005 4:31 AM (in response to sasaa)

Hi Scott (or anyone else that now about this)

I'm experiensing the same problem as sasaa in JBoss 3.2.7. Could you tell me what you meen by loading all classes in the same thread on startup. In my case this happens in Tomcat/axis code on the server before my code is called. Do you meen that it is possible to load axis/tomcat in a single thread (if it is, please tell me how), or have I completely missed the point.

Thank you

Here is my stacktrace:

java.lang.ClassCircularityError: java/lang/String_Helper
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:219)
org.apache.axis.utils.ClassUtils$2.run(ClassUtils.java:200)
java.security.AccessController.doPrivileged(Native Method)
org.apache.axis.utils.ClassUtils.loadClass(ClassUtils.java:179)
org.apache.axis.utils.ClassUtils.forName(ClassUtils.java:120)
org.apache.axis.encoding.ser.BaseFactory.getMethod(BaseFactory.java:87)
org.apache.axis.encoding.ser.BaseDeserializerFactory.getGetDeserializer(BaseDeserializerFactory.java:325)
org.apache.axis.encoding.ser.BaseDeserializerFactory.getSpecialized(BaseDeserializerFactory.java:195)
org.apache.axis.encoding.ser.BaseDeserializerFactory.getDeserializerAs(BaseDeserializerFactory.java:118)
org.apache.axis.encoding.ser.SimpleDeserializerFactory.getDeserializerAs(SimpleDeserializerFactory.java:117)
org.apache.axis.encoding.DeserializationContextImpl.getDeserializer(DeserializationContextImpl.java:575)
org.apache.axis.message.RPCHandler.onStartChild(RPCHandler.java:308)
org.apache.axis.encoding.DeserializationContextImpl.startElement(DeserializationContextImpl.java:1166)
org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.java:244)
org.apache.axis.message.SOAPElementAxisImpl.publishToHandler(SOAPElementAxisImpl.java:1387)
org.apache.axis.message.RPCElement.deserialize(RPCElement.java:262)
org.apache.axis.message.RPCElement.getParams(RPCElement.java:396)
org.apache.axis.providers.java.RPCInvocation.prepareFromRequestEnvelope(RPCInvocation.java:234)
org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:103)
org.jboss.net.axis.server.EJBProvider.processMessage(EJBProvider.java:231)
org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:358)
org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:73)
org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:160)
org.apache.axis.SimpleChain.invoke(SimpleChain.java:123)
org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:560)
org.apache.axis.server.AxisServer.invoke(AxisServer.java:355)
org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:975)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:370)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)

<-- Client/server boundry

My code
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4. Re: Urgent:ClassCircularityError

kabish Feb 10, 2006 4:14 PM (in response to sasaa)

I am also getting the same error in 3.2.5 and 3.2.8 with JDK 1.4.2_05.
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