Actually, looking at these error messages a bit more closely, this may be entirely unrelated. It could be an XMLUI specific issue, rather than a database layer issue that you are seeing.
- Tim On 12/9/2011 10:54 AM, Tim Donohue wrote: > Hi Mark, > > Unfortunately, I don't have an answer for you. But, digging around I > noticed a similar oddity on demo.dspace.org. On demo.dspace.org we're > getting some similar sorts of SocketException errors (though "broken > pipe" rather than "socket closed") in the dspace.log files, but these > are from the XMLUI. > > demo.dspace.org is currently running: > * DSpace 1.8.0 > * PostgreSQL 8.4.2 > * Tomcat 6.0.29 > * Java 1.6.0_24 > > The error on demo.dspace.org is a "ClientAbortException: > java.net.SocketException: Broken pipe" (in XMLUI), which is caused by an > underlying "java.net.SocketException: Broken pipe". Not the same error, > but eerily similar. The XMLUI seems to handle it in stride, but it does > cause frequent lines like this to appear in the logs: > > 2011-12-09 10:51:48,663 ERROR > org.dspace.app.xmlui.cocoon.DSpaceCocoonServletFilter @ Serious Error > Occurred Processing Request! > > In the PostgreSQL logs I see some occasional "unexpected EOF on client > connection" errors, but the times don't seem to match up with the > SocketExceptions above. > > I'm also seeing these same logged issues on my local development box, > now that I look closer. Again, I cannot verify this is 100% related to > your same issue, but it does look a bit similar. > > An example of a full error stack trace from the dspace logs is attached. > > Sorry I don't have more help to add. Just wanted to send along what I've > noticed that seems a bit similar. So far, I haven't noticed this same > issue with the packager -- but, admittedly I'm using 1.8.0 (which did > include some changes/bug fixes to the packager, though I'm not sure that > any were related to this issue). > > - Tim > > On 12/9/2011 10:18 AM, Mark H. Wood wrote: >> I'm trying to script a daily incremental dump using the packager. >> Sometimes it completes, but most often it throws "PSQLException: An I/O >> error occurred while sending to the backend" caused by >> "java.net.SocketException: Socket closed". About the same time >> PostgreSQL logs "unexpected EOF on client connection" and tears down >> its session. I turned logging way up on both ends but saw nothing >> unusual on the DSpace side and only the unexpected EOF on the Pg side. >> >> Digging through the Pg log, I see lots of these unexpected EOFs. >> Apparently the webapp is getting this too but takes it in stride. >> Commandline app.s seem to be less fortunate. >> >> I captured a packet trace while running my script and can see that the >> client is chugging along, making requests and getting responses, then >> suddenly the client sends a TCP FIN, ACK packet and that's the end of >> that. No Pg shutdown message was sent, so far as I can tell, and >> that's why Pg says "unexpected EOF". After fairly rapid exchanges >> there's a pause of about 0.8 seconds between the previous packet >> (client ACKing the server's last response) and the FIN. >> >> The Pg backend is v9.0.5. This DSpace instance is v1.7.2. OS is >> Gentoo Linux x86 with all current userspace updates and kernel >> 2.6.39. JRE is Oracle (Sun) 1.6.0_29-b11. Ideas for debugging this? >> >> >> >> >> ------------------------------------------------------------------------------ >> >> Cloud Services Checklist: Pricing and Packaging Optimization >> This white paper is intended to serve as a reference, checklist and >> point of >> discussion for anyone considering optimizing the pricing and packaging >> model >> of a cloud services business. Read Now! >> http://www.accelacomm.com/jaw/sfnl/114/51491232/ >> >> >> >> _______________________________________________ >> DSpace-tech mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/dspace-tech ------------------------------------------------------------------------------ Cloud Services Checklist: Pricing and Packaging Optimization This white paper is intended to serve as a reference, checklist and point of discussion for anyone considering optimizing the pricing and packaging model of a cloud services business. Read Now! http://www.accelacomm.com/jaw/sfnl/114/51491232/ _______________________________________________ DSpace-tech mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dspace-tech
