Tim Hi,
Have you manage to solve this issue ?
I have the same problem and from the logs it seams the Database resets
the connection.
Dspace - 1.7.2
PostgreSQL- 8.4.9
Any ideias ?
On Fri, 2011-12-09 at 10:58 -0600, Tim Donohue wrote:
> 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
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> >> 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/
> _______________________________________________
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> [email protected]
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