Suddenly this morning I could not access the data in Xindice ...
execution exception.
Running Xindice under Tomcat
- Apache Tomcat/5.5.27
- Xindice 1.1
on a Linux box
Symptoms:
- Xindice is running under Tomcat (status seen in Tomcat Web
Application Manager)
- I can open the "Xindice Ugly Debug Tool"
- I can navigate through the collection hierarchy
- I can see that all documents exist
- trying to inspect the contents of any document results in an exception
That accessing *any* document generates that exception indicates to me
that no single content file has been corrupted. And that all document
files but no collection files have eroded, that is unlikely.
Has some core central system-oriented file been perverted?
Or is it a question of a bug in Xindice software?
As to OS access restrictions, they all look good:
-rw-rw-r--+
except for SysAccess.tbl, SysGroups.tbl, SysObjects.tbl, and
SysUsers.tbl, that have
-rwxr--r--+
And there is no lack of available space on the file system.
Extracts from logs reproduced below.
*Question*:
- Any hints/advise?
- are there any diagnostic tools?
- are there any repair tools?
/olle
______________________
localhost.2010-06-09.log
Jun 9, 2010 12:04:48 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet xindice threw exception
java.lang.NullPointerException
at
org.apache.xindice.xml.dom.ElementImpl.checkLoaded(ElementImpl.java:110)
at org.apache.xindice.xml.dom.NodeImpl.getNodeName(NodeImpl.java:442)
at
org.apache.xindice.xml.dom.ElementImpl.getTagName(ElementImpl.java:244)
at org.apache.xml.serialize.XMLSerializer.serializeElement(Unknown
Source)
at
org.apache.xml.serialize.BaseMarkupSerializer.serializeNode(Unknown Source)
at org.apache.xml.serialize.XMLSerializer.serializeElement(Unknown
Source)
at
org.apache.xml.serialize.BaseMarkupSerializer.serializeNode(Unknown Source)
at org.apache.xml.serialize.XMLSerializer.serializeElement(Unknown
Source)
at
org.apache.xml.serialize.BaseMarkupSerializer.serializeNode(Unknown Source)
at
org.apache.xml.serialize.BaseMarkupSerializer.serializeNode(Unknown Source)
at org.apache.xml.serialize.BaseMarkupSerializer.serialize(Unknown
Source)
at
org.apache.xindice.server.UglyBrowser.prettyPrint(UglyBrowser.java:203)
at
org.apache.xindice.server.UglyBrowser.getDetailView(UglyBrowser.java:192)
at org.apache.xindice.server.UglyBrowser.doGet(UglyBrowser.java:82)
at
org.apache.xindice.server.XindiceServlet.doGet(XindiceServlet.java:84)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:548)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:619)
______________________
catalina.out (and catalina.2010-06-09.log)
Jun 9, 2010 12:04:48 PM org.apache.xindice.xml.dom.ElementImpl <init>
WARNING: ignored exception
java.lang.NullPointerException
at
org.apache.xindice.xml.dom.ElementImpl.loadAttributes(ElementImpl.java:189)
at
org.apache.xindice.xml.dom.ElementImpl.<init>(ElementImpl.java:66)
at
org.apache.xindice.xml.dom.ContainerNodeImpl.loadChildren(ContainerNodeImpl.java:128)
at
org.apache.xindice.xml.dom.ElementImpl.checkLoaded(ElementImpl.java:113)
at
org.apache.xindice.xml.dom.NodeImpl.getNodeName(NodeImpl.java:442)
at
org.apache.xindice.xml.dom.ElementImpl.getTagName(ElementImpl.java:244)
at
org.apache.xml.serialize.XMLSerializer.serializeElement(Unknown Source)
at
org.apache.xml.serialize.BaseMarkupSerializer.serializeNode(Unknown Source)
at
org.apache.xml.serialize.XMLSerializer.serializeElement(Unknown Source)
at
org.apache.xml.serialize.BaseMarkupSerializer.serializeNode(Unknown Source)
at
org.apache.xml.serialize.BaseMarkupSerializer.serializeNode(Unknown Source)
at
org.apache.xml.serialize.BaseMarkupSerializer.serialize(Unknown Source)
at
org.apache.xindice.server.UglyBrowser.prettyPrint(UglyBrowser.java:203)
at
org.apache.xindice.server.UglyBrowser.getDetailView(UglyBrowser.java:192)
at org.apache.xindice.server.UglyBrowser.doGet(UglyBrowser.java:82)
at
org.apache.xindice.server.XindiceServlet.doGet(XindiceServlet.java:84)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:548)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:619)
Jun 9, 2010 12:05:34 PM
org.apache.xindice.core.DatabaseChangeObserver$FlushTask run
INFO: Successfully flushed 0 collections out of 0
.....
--
------------------------------------------------------------------
Olle Olsson ol...@sics.se Tel: +46 8 633 15 19 Fax: +46 8 751 72 30
[Svenska W3C-kontoret: ol...@w3.org]
SICS [Swedish Institute of Computer Science]
Box 1263
SE - 164 29 Kista
Sweden
------------------------------------------------------------------
