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From "Numan Ilyas (JIRA)" <j...@apache.org>
Subject [jira] [Created] (XALANJ-2574) Hung Threads at org.apache.xml.dtm.ref.DTMDefaultBase.findNamespaceContext(Unknown Source)
Date Thu, 22 Aug 2013 19:43:52 GMT
Numan Ilyas created XALANJ-2574:
-----------------------------------

             Summary: Hung Threads at org.apache.xml.dtm.ref.DTMDefaultBase.findNamespaceContext(Unknown
Source)
                 Key: XALANJ-2574
                 URL: https://issues.apache.org/jira/browse/XALANJ-2574
             Project: XalanJ2
          Issue Type: Bug
      Security Level: No security risk; visible to anyone (Ordinary problems in Xalan projects.
 Anybody can view the issue.)
          Components: Xalan, XPath
    Affects Versions: 2.7.1
         Environment: RHEL, WebSphere
            Reporter: Numan Ilyas
            Assignee: Steven J. Hathaway
            Priority: Critical


We are having hung threads in our JVM logs and these threads are consuming all the CPU and
hence application performance degrades. Our application is running on WebSphere. Following
is the stack trace for the hung threads.

[8/20/13 10:29:57:982 EDT] 0000001a ThreadMonitor W   WSVR0605W: Thread "Migrated.Servlet.Engine.Transports
: 1605" (00000670) has been active for 646127 milliseconds and may be hung.  There is/are
1 thread(s) in total in the server that may be hung.
	at org.apache.xml.dtm.ref.DTMDefaultBase.findNamespaceContext(Unknown Source)
	at org.apache.xml.dtm.ref.DTMDefaultBase.declareNamespaceInContext(Unknown Source)
	at org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.addNode(Unknown Source)
	at org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.processNamespacesAndAttributes(Unknown Source)
	at org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.nextNode(Unknown Source)
	at org.apache.xml.dtm.ref.DTMDefaultBase._nextsib(Unknown Source)
	at org.apache.xml.dtm.ref.DTMDefaultBase.getNextSibling(Unknown Source)
	at org.apache.xml.dtm.ref.DTMDefaultBaseTraversers$ChildTraverser.next(Unknown Source)
	at org.apache.xpath.axes.AxesWalker.getNextNode(Unknown Source)
	at org.apache.xpath.axes.AxesWalker.nextNode(Unknown Source)
	at org.apache.xpath.axes.WalkingIterator.nextNode(Unknown Source)
	at org.apache.xpath.axes.NodeSequence.nextNode(Unknown Source)
	at org.apache.xpath.axes.NodeSequence.runTo(Unknown Source)
	at org.apache.xpath.axes.NodeSequence.setRoot(Unknown Source)
	at org.apache.xpath.axes.LocPathIterator.execute(Unknown Source)
	at org.apache.xpath.XPath.execute(Unknown Source)
	at org.apache.xpath.jaxp.XPathExpressionImpl.evaluate(Unknown Source)           
                at our code reference
	at com.ibm._jsp._GetCustomerViewExclusionDetails._jspService(_GetCustomerViewExclusionDetails.java:152)
	at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:98)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1655)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1595)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
	at com.savvion.sbm.websecurity.xss.filter.XSSFilter.doFilter(Unknown Source)
	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
	at com.savvion.sbm.bpmportal.util.GZIPFilter.doFilter(Unknown Source)
	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
	at com.savvion.sbm.bpmportal.util.EncodingFilter.doFilter(Unknown Source)
	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
	at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:121)
	at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:239)
	at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:864)
	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
	at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)

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