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From Berin Loritsch <blorit...@apache.org>
Subject Re: [C2][Xalan2] Xalan2J problems under heavy load using Apache JMeter
Date Wed, 28 Feb 2001 18:49:41 GMT
Davanum Srinivas wrote:
> 
> Scott, Xalan2J Team,
> 
> Can you please take a look at the stack trace(s) in the enclosed file. This log was created
by
> running Apache JMeter against the C2, Xerces1.3.0 and Xalan2J all compiled fresh from
CVS. All
> this happened under extremely heavy load against the same URL served by C2. It's easy
to reproduce
> the problem using C2 but very difficult to come up with a stripped down sample.
> 
> Thanks,
> dims

I really appreciate you taking this on.  Out of curiosity, how high is
the load you are presenting?  Is it the same as I had specified to you
off line?

> 
> =====
> Davanum Srinivas, JNI-FAQ Manager
> http://www.jGuru.com/faq/JNI
> 
> __________________________________________________
> Do You Yahoo!?
> Get email at your own domain with Yahoo! Mail.
> http://personal.mail.yahoo.com/
> 
>   ------------------------------------------------------------------------------------------------------------------------------------
> 2001-02-28 12:57:20 - ContextManager: Adding context Ctx( /examples )
> 2001-02-28 12:57:20 - ContextManager: Adding context Ctx( /admin )
> Starting tomcat. Check logs/tomcat.log for error messages
> 2001-02-28 12:57:21 - ContextManager: Adding context Ctx( /cocoon )
> 2001-02-28 12:57:22 - ContextManager: Adding context Ctx(  )
> 2001-02-28 12:57:23 - ContextManager: Adding context Ctx( /test )
> 2001-02-28 12:57:24 - PoolTcpConnector: Starting HttpConnectionHandler on 8080
> 2001-02-28 12:57:24 - PoolTcpConnector: Starting Ajp12ConnectionHandler on 8007
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:1925)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> java.lang.ArrayIndexOutOfBoundsException
>         at org.apache.xml.utils.NodeVector.popAndTop(NodeVector.java:234)
>         at org.apache.xml.utils.DOMBuilder.endElement(DOMBuilder.java:378)
>         at org.apache.xalan.stree.StreeDOMBuilder.endElement(StreeDOMBuilder.java:240)
>         at org.apache.xalan.stree.SourceTreeHandler.endElement(SourceTreeHandler.java:550)
>         at org.apache.cocoon.xml.ContentHandlerWrapper.endElement(ContentHandlerWrapper.java:145)
>         at org.apache.xerces.parsers.SAXParser.endElement(SAXParser.java:1403)
>         at org.apache.xerces.validators.common.XMLValidator.callEndElement(XMLValidator.java:1385)
>         at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1260)
>         at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
>         at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:952)
>         at org.apache.cocoon.components.parser.JaxpParser.parse(JaxpParser.java:67)
>         at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:165)
>         at org.apache.cocoon.sitemap.ResourcePipeline.process(ResourcePipeline.java:201)
>         at org.apache.cocoon.sitemap_xmap.process(sitemap_xmap.java:2296)
>         at org.apache.cocoon.sitemap.Handler.process(Handler.java:154)
>         at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:108)
>         at org.apache.cocoon.Cocoon.process(Cocoon.java:215)
>         at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:387)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>         at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
>         at org.apache.tomcat.core.Handler.service(Handler.java:286)
>         at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
>         at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
>         at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
>         at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
>         at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
>         at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:145)
>         at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java:495)
>         at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:193)
>         at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2148)
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2033)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> java.lang.ArrayIndexOutOfBoundsException
>         at org.apache.xml.utils.NodeVector.popAndTop(NodeVector.java:234)
>         at org.apache.xml.utils.DOMBuilder.endElement(DOMBuilder.java:378)
>         at org.apache.xalan.stree.StreeDOMBuilder.endElement(StreeDOMBuilder.java:240)
>         at org.apache.xalan.stree.SourceTreeHandler.endElement(SourceTreeHandler.java:550)
>         at org.apache.cocoon.xml.ContentHandlerWrapper.endElement(ContentHandlerWrapper.java:145)
>         at org.apache.xerces.parsers.SAXParser.endElement(SAXParser.java:1403)
>         at org.apache.xerces.validators.common.XMLValidator.callEndElement(XMLValidator.java:1385)
>         at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1260)
>         at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
>         at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:952)
>         at org.apache.cocoon.components.parser.JaxpParser.parse(JaxpParser.java:67)
>         at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:165)
>         at org.apache.cocoon.sitemap.ResourcePipeline.process(ResourcePipeline.java:201)
>         at org.apache.cocoon.sitemap_xmap.process(sitemap_xmap.java:2296)
>         at org.apache.cocoon.sitemap.Handler.process(Handler.java:154)
>         at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:108)
>         at org.apache.cocoon.Cocoon.process(Cocoon.java:215)
>         at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:387)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>         at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
>         at org.apache.tomcat.core.Handler.service(Handler.java:286)
>         at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
>         at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
>         at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
>         at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
>         at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
>         at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:145)
>         at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java:495)
>         at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:193)
>         at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2148)
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2033)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:145)
>         at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java:495)
>         at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:193)
>         at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2148)
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2033)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> java.lang.ArrayIndexOutOfBoundsException
>         at org.apache.xml.utils.NodeVector.popAndTop(NodeVector.java:234)
>         at org.apache.xml.utils.DOMBuilder.endElement(DOMBuilder.java:378)
>         at org.apache.xalan.stree.StreeDOMBuilder.endElement(StreeDOMBuilder.java:240)
>         at org.apache.xalan.stree.SourceTreeHandler.endElement(SourceTreeHandler.java:550)
>         at org.apache.cocoon.xml.ContentHandlerWrapper.endElement(ContentHandlerWrapper.java:145)
>         at org.apache.xerces.parsers.SAXParser.endElement(SAXParser.java:1403)
>         at org.apache.xerces.validators.common.XMLValidator.callEndElement(XMLValidator.java:1385)
>         at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1260)
>         at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
>         at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:952)
>         at org.apache.cocoon.components.parser.JaxpParser.parse(JaxpParser.java:67)
>         at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:165)
>         at org.apache.cocoon.sitemap.ResourcePipeline.process(ResourcePipeline.java:201)
>         at org.apache.cocoon.sitemap_xmap.process(sitemap_xmap.java:2296)
>         at org.apache.cocoon.sitemap.Handler.process(Handler.java:154)
>         at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:108)
>         at org.apache.cocoon.Cocoon.process(Cocoon.java:215)
>         at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:387)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>         at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
>         at org.apache.tomcat.core.Handler.service(Handler.java:286)
>         at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
>         at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
>         at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
>         at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
>         at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
>         at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
>         at java.lang.Thread.run(Thread.java:484)
> java.lang.ArrayIndexOutOfBoundsException
>         at org.apache.xml.utils.NodeVector.push(NodeVector.java:199)
>         at org.apache.xalan.stree.StreeDOMBuilder.startElement(StreeDOMBuilder.java:221)
>         at org.apache.xalan.stree.SourceTreeHandler.startElement(SourceTreeHandler.java:523)
>         at org.apache.cocoon.xml.ContentHandlerWrapper.startElement(ContentHandlerWrapper.java:134)
>         at org.apache.xerces.parsers.SAXParser.startElement(SAXParser.java:1376)
>         at org.apache.xerces.validators.common.XMLValidator.callStartElement(XMLValidator.java:1170)
>         at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:994)
>         at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
>         at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:952)
>         at org.apache.cocoon.components.parser.JaxpParser.parse(JaxpParser.java:67)
>         at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:165)
>         at org.apache.cocoon.sitemap.ResourcePipeline.process(ResourcePipeline.java:201)
>         at org.apache.cocoon.sitemap_xmap.process(sitemap_xmap.java:2296)
>         at org.apache.cocoon.sitemap.Handler.process(Handler.java:154)
>         at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:108)
>         at org.apache.cocoon.Cocoon.process(Cocoon.java:215)
>         at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:387)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>         at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
>         at org.apache.tomcat.core.Handler.service(Handler.java:286)
>         at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
>         at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
>         at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
>         at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
>         at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
>         at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:145)
>         at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java:495)
>         at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:193)
>         at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2148)
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2033)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> java.lang.ArrayIndexOutOfBoundsException
>         at org.apache.xml.utils.NodeVector.popAndTop(NodeVector.java:234)
>         at org.apache.xml.utils.DOMBuilder.endElement(DOMBuilder.java:378)
>         at org.apache.xalan.stree.StreeDOMBuilder.endElement(StreeDOMBuilder.java:240)
>         at org.apache.xalan.stree.SourceTreeHandler.endElement(SourceTreeHandler.java:550)
>         at org.apache.cocoon.xml.ContentHandlerWrapper.endElement(ContentHandlerWrapper.java:145)
>         at org.apache.xerces.parsers.SAXParser.endElement(SAXParser.java:1403)
>         at org.apache.xerces.validators.common.XMLValidator.callEndElement(XMLValidator.java:1385)
>         at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1260)
>         at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
>         at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:952)
>         at org.apache.cocoon.components.parser.JaxpParser.parse(JaxpParser.java:67)
>         at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:165)
>         at org.apache.cocoon.sitemap.ResourcePipeline.process(ResourcePipeline.java:201)
>         at org.apache.cocoon.sitemap_xmap.process(sitemap_xmap.java:2296)
>         at org.apache.cocoon.sitemap.Handler.process(Handler.java:154)
>         at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:108)
>         at org.apache.cocoon.Cocoon.process(Cocoon.java:215)
>         at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:387)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>         at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
>         at org.apache.tomcat.core.Handler.service(Handler.java:286)
>         at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
>         at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
>         at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
>         at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
>         at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
>         at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:145)
>         at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java:495)
>         at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:193)
>         at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2148)
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2033)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:145)
>         at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java:495)
>         at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:193)
>         at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2148)
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2033)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:145)
>         at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java:495)
>         at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:193)
>         at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2148)
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2033)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:145)
>         at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java:495)
>         at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:193)
>         at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2148)
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2033)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:1925)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:1925)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> javax.xml.transform.TransformerException
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1212)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> ---------
> java.lang.NullPointerException
>         at org.apache.xalan.templates.ElemCopy.execute(ElemCopy.java:145)
>         at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java:495)
>         at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:193)
>         at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2148)
>         at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2033)
>         at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1189)
>         at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2888)
>         at java.lang.Thread.run(Thread.java:484)
> 
>   ------------------------------------------------------------------------------------------------------------------------------------
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