Hello,
we used the Fedora Repository 3.0 for a semester project. We build up a small
webbased PictureCommunity
with Java Servlets and JSP but using the app by a single person causes
permanent hang ups. We traced the
code with debug outputs for looking the cause and the affected method at which
the hang up appears.
We implemented a simple Wrapper for the FedoraAPIM which uses the FedoraClient
and located the following
methods at FedoraAPIM, where the problem occurs.
getRelationships(pid, relationship)
getObjectXML(pid)
and sometimes getDatastream(pid, dsID, asOfDateTime)
Only running an redeploy of the fedora servlet solves the problem temporary. We
couldnt find any solutions
for the problem on the web. In the Tomcat Logfile whe detected the
below-mentioned Exception.
We are running Tomcat 6.0.14-2.2.9 on the local development machines, but on
our remote server, where
the app should be deployed after the project is finished (next week :-( ), we
still have the same hangups.
Any ideas for this problem ?! Did we forgot to configure something ?!
PermGenSpace is up to 320MB,
HeapSpace is up to 128MB. MySQL Max_Connections increased to 3000.
Thanks for your help !
17.01.2009 01:19:59 org.apache.catalina.core.StandardWrapperValve invoke
SCHWERWIEGEND: Servlet.service() for servlet AccessServlet threw exception
java.net.SocketException: Software caused connection abort: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at
org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:737)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:434)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:349)
at
org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:761)
at
org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:126)
at
org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:570)
at org.apache.coyote.Response.doWrite(Response.java:560)
at
org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:353)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:434)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:349)
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:381)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:370)
at
org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89)
at
fedora.server.access.FedoraAccessServlet.getDissemination(FedoraAccessServlet.java:825)
at fedora.server.access.FedoraAccessServlet.doGet(FedoraAccessServlet.java:460)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
fedora.server.security.servletfilters.FilterSetup.doFilter(FilterSetup.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
fedora.server.security.servletfilters.FilterSetup.doFilter(FilterSetup.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
fedora.server.security.servletfilters.FilterSetup.doFilter(FilterSetup.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
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