We are currently running version 1.3.2 of Dspace at our institution. In
the past few months we've received an increasing number of the following
errors. It seems to happen when a bot scans the collection in the middle
of the night. In recent weeks, it can generate as many as 400 error
messages when you check the server in the morning.
Is there a way to fix this, or will upgrading to version 1.4.2 cause this
problem to no longer be an issue?
Here's a sample error message-
An internal server error message occured on
http://library.ferris.edu:8080/dspace
Date: 10/31/07 4:55 AM
Session ID: 4CCC412503EA70151A9330F358C15F
--URL Was: http://library.ferris.edu:8080/dspace/browse-date?year=1999
--Method: GET
--Parameters were:
--year: "1999"
Exception
java.lang.NullPointerException
at org.dspace.app.webui.servlet.BrowseServlet.doDSGet
(BrowseServlet.java:154)
at org.dspace.app.webui.servlet.DSpaceServlet.processRequest
(DSpaceServlet.java: 151)
at org.dspace.app.webui.servlet.DSpaceServlet.doGet
(DSpaceServlet.java: 99)
at javax.servlet.http.HttpServlet.service (HttpServlet.java.689)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java: 252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java: 173)
at org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java: 213)
at org.apache.catalina.core.StandardContextValve.invoke
(StandardContextValve.java: 178)
at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java: 126)
at org.apache.catalina.valves.ErrorReortValve.invoke
(ErrorReportValve.java: 105)
at org.apache.catalina.core.StandardEngineValve.invoke
(StandardEngineValve.java: 107)
at org.apache.catalina.connector.CoyoteAdapter.service
(CoyoteAdapter.java: 148)
at org.apache.coyote.http11.Http11Processor.process
(Http11Processor.java: 868)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection
(Http11BaseProtocol.java: 663)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket
(PoolTopEndpoint.java: 527)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt
(LeaderFollowerWorkerThread.java: 80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run
(Threadbook.java: 684)
at java.lang.Thread.run (Thread.java: 595)
_______________________________
Melinda McMartin
University Archivist/ Special Collections Librarian
FLITE 358, Ferris State University
1010 Campus Drive
Big Rapids, MI 49307
(231) 591-3731-------------------------------------------------------------------------
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