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https://issues.apache.org/jira/browse/AXIS2-4517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12763409#action_12763409
]
Maslakov Denis commented on AXIS2-4517:
---------------------------------------
Hi!
The class org.apache.axis2.description.AxisService was changed. The file is
attached to issue.
I added the synchronization (on object a Definition) to following methods of
class AxisService:
1. public void printWSDL(OutputStream out, String requestIP) throws AxisFault
{...}
2. public void printUserWSDL(OutputStream out, String wsdlName, String ip)
throws AxisFault {...}
3. private void printDefinitionObject(Definition definition, OutputStream out,
String requestIP)
throws AxisFault, WSDLException {...}
All changes in these methods are marked by tag MDA.
During two days of work all fine.
Statistics of requests on Web-services can be viewed on the link
http://eng.scanrealty.com/network/statistics/. The application
http://www.scanrealty.com/observer/index.html.
> AxisServlet error. NullPointerException and StackOverflowError
> --------------------------------------------------------------
>
> Key: AXIS2-4517
> URL: https://issues.apache.org/jira/browse/AXIS2-4517
> Project: Axis 2.0 (Axis2)
> Issue Type: Bug
> Components: transports
> Affects Versions: nightly
> Environment: FreeBSD 6.2, Diablo JDK 1.5, Tomcat 6.0.14
> Reporter: Maslakov Denis
> Priority: Critical
>
> We experienced this problem with Axis2 running under Tomcat 6 with many
> concurrent users above 1000.
> The transport is an org.apache.axis2.transport.http.AxisServletListener
> (http).
> The error:
> 05.10.2009 23:46:15 org.apache.catalina.core.StandardWrapperValve invoke
> SEVERE: Servlet.service() for servlet AxisServlet threw exception
> java.lang.NullPointerException
> at
> com.sun.org.apache.xerces.internal.dom.ParentNode.nodeListItem(ParentNode.java:814)
> at
> com.sun.org.apache.xerces.internal.dom.ParentNode.item(ParentNode.java:828)
> at com.ibm.wsdl.util.xml.DOM2Writer.print(Unknown Source)
> at com.ibm.wsdl.util.xml.DOM2Writer.serializeAsXML(Unknown Source)
> at com.ibm.wsdl.extensions.schema.SchemaSerializer.marshall(Unknown
> Source)
> at com.ibm.wsdl.xml.WSDLWriterImpl.printExtensibilityElements(Unknown
> Source)
> at com.ibm.wsdl.xml.WSDLWriterImpl.printTypes(Unknown Source)
> at com.ibm.wsdl.xml.WSDLWriterImpl.printDefinition(Unknown Source)
> at com.ibm.wsdl.xml.WSDLWriterImpl.writeWSDL(Unknown Source)
> at com.ibm.wsdl.xml.WSDLWriterImpl.writeWSDL(Unknown Source)
> at
> org.apache.axis2.description.AxisService.printDefinitionObject(AxisService.java:1065)
> at
> org.apache.axis2.description.AxisService.printUserWSDL(AxisService.java:1084)
> at
> org.apache.axis2.description.AxisService.printWSDL(AxisService.java:1360)
> at
> org.apache.axis2.transport.http.ListingAgent.processListService(ListingAgent.java:211)
> at
> org.apache.axis2.transport.http.AxisServlet.doGet(AxisServlet.java:259)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
> at
> org.apache.coyote.ajp.AjpAprProcessor.process(AjpAprProcessor.java:419)
> at
> org.apache.coyote.ajp.AjpAprProtocol$AjpConnectionHandler.process(AjpAprProtocol.java:394)
> at
> org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1508)
> at java.lang.Thread.run(Thread.java:595)
> follow error:
> 05.10.2009 23:58:17 org.apache.catalina.core.StandardWrapperValve invoke
> SEVERE: Servlet.service() for servlet AxisServlet threw exception
> java.lang.StackOverflowError
> at java.util.Hashtable.get(Hashtable.java:339)
> at com.ibm.wsdl.util.ObjectRegistry.lookup(Unknown Source)
> at com.ibm.wsdl.util.ObjectRegistry.lookup(Unknown Source)
> at com.ibm.wsdl.util.ObjectRegistry.lookup(Unknown Source)
> - // -
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