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Type:
Bug
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Status: Resolved
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Priority:
Critical
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Resolution: Fixed
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Affects Version/s: 7.10
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Component/s: Error Management
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Sprint:nxFG 9.1.10
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Story Points:3
If a servlet causes a runtime exception, the error recovery behaves incorrectly and causes the thread context to be in a state from which Tomcat does not recover automatically.
The recurring error is:
ERROR [DefaultNuxeoExceptionHandler] java.lang.NullPointerException at org.apache.catalina.connector.Request.getServletContext(Request.java:1655) at org.apache.catalina.connector.Request.getContextPath(Request.java:2013) at org.apache.catalina.connector.RequestFacade.getContextPath(RequestFacade.java:785) at org.nuxeo.ecm.platform.web.common.vh.VirtualHostHelper.getContextPath(VirtualHostHelper.java:175) at org.nuxeo.ecm.platform.web.common.vh.VirtualHostHelper.getWebAppName(VirtualHostHelper.java:67) at org.nuxeo.ecm.platform.ui.web.util.BaseURL.getWebAppName(BaseURL.java:62) at org.nuxeo.ecm.platform.ui.web.util.BaseURL.getLocalBaseURL(BaseURL.java:80) at org.nuxeo.ecm.platform.ui.web.rest.services.URLPolicyServiceImpl.getDocumentViewFromRequest(URLPolicyServiceImpl.java:251) at org.nuxeo.ecm.platform.ui.web.rest.services.URLPolicyServiceImpl.getURLPatternDescriptor(URLPolicyServiceImpl.java:196) at org.nuxeo.ecm.platform.ui.web.rest.services.URLPolicyServiceImpl.isCandidateForDecoding(URLPolicyServiceImpl.java:142)
As well as a followup exception:
12:47:56,454 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception java.lang.NullPointerException at org.jboss.seam.mock.MockExternalContext$3.getAttribute(MockExternalContext.java:388) at org.jboss.seam.mock.MockExternalContext$AttributeMap.get(MockExternalContext.java:412) at org.jboss.seam.contexts.ServerConversationContext.get(ServerConversationContext.java:103) at org.jboss.seam.contexts.Contexts.lookupInStatefulContexts(Contexts.java:228) at org.jboss.seam.Component.getInstance(Component.java:1996) at org.jboss.seam.Component.getInstance(Component.java:1991) at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:55) at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:50) at org.jboss.seam.el.SeamELResolver.resolveBase(SeamELResolver.java:148) at org.jboss.seam.el.SeamELResolver.getValue(SeamELResolver.java:51) at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) at com.sun.faces.el.ChainTypeCompositeELResolver.getValue(ChainTypeCompositeELResolver.java:90) at org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:90) at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:71) at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184) at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:950) at org.apache.jsp.nuxeo_005ferror_jsp._jspx_meth_c_005fout_005f0(nuxeo_005ferror_jsp.java:321) at org.apache.jsp.nuxeo_005ferror_jsp._jspService(nuxeo_005ferror_jsp.java:203) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
This error happens if for an instance a null is returned from blob.getStream() in the DownloadServiceImpl. This immediately causes a NullPointerException which is caught by DefaultNuxeoExceptionHandler.handleException which calls requestDispatcher.forward to generate the JSP error page. However JSP page rendering fails because even though response.isCommitted() == false, we have org.apache.catalina.connector.Response.usingOutputStream == true which prevents JSP from acquiring a PrintWriter. This error in error leaves the FacesContext.getCurrentInstance().getExternalContext().getRequest() in a state without a context which is reused by the next user of the same thread, which fails with the above stack trace.
- is required by
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- Resolved
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