[Mulgara-dev] Mulgara 2.1.6

Agustina Martinez amgcia at gmail.com
Thu Jan 28 09:54:44 UTC 2010


Hi Paul,

I am currently using the latest mulgara release and using the JETTY server
version. I've noticed that when I run queries to the Sparql service I get
the following exceptions in the log though the service returns proper
responses.

2010-01-28 09:49:25,582 WARN  [btpool0-9 -
/sparql/?query=PREFIX%20dc%3A%20%3Chttp%3A//
purl.org/dc/elements/1.1/%3E%0APREFIX%20rel%3A%20%3Cinfo%3Afedora/fedora-system%3Adef/relations-external%23%3E%0APREFIX%20ex%3A%20%3Chttp%3A//www.example.org/%3E%0APREFIX%20rdf%3A%20%3Chttp%3A//www.w3.org/1999/02/22-rdf-syntax-ns%23%3E%0A%0ACONSTRUCT%0A{%0A%20%20%3Fsubject%20a%20%3Cex%3Aitem%3E%3B%0A%20%20%20%20%20%20%20%20%20%20%20%3Fp%20%3Fo.%0A}%0AFROM%20%3Crmi%3A//tel-fedora.caret.cam.ac.uk/fedora%23ri%3E%0AWHERE%20%0A{%0A%20%20{%3Fsubject%20%3Crel%3AisMemberOfCollection%3E%20%3Fcollection.}%0A%20%20UNION%0A%20%20{%3Fsubject%20%3Crel%3AisPartOf%3E%20%3Fcollection.}%0A%20%20filter%20regex(str(%3Fcollection)%20%2C%20%22.*moamdemo%3Aroot%22%2C%20%22i%22)%0A%20%20{%0A%20%20%20%20%3Fsubject%20%3Fp%20%3Fo.%0A%20%20%20%20filter%20(regex(str(%3Fp)%2C%20%22.*dc.*%22%2C%20%22i%22))%0A%20%20}%20%0A}]
util.MortbayLogger - Committed before 500 Error closing: TransactionalAnswer
closed
2010-01-28 09:49:25,583 WARN  [btpool0-9 -
/sparql/?query=PREFIX%20dc%3A%20%3Chttp%3A//
purl.org/dc/elements/1.1/%3E%0APREFIX%20rel%3A%20%3Cinfo%3Afedora/fedora-system%3Adef/relations-external%23%3E%0APREFIX%20ex%3A%20%3Chttp%3A//www.example.org/%3E%0APREFIX%20rdf%3A%20%3Chttp%3A//www.w3.org/1999/02/22-rdf-syntax-ns%23%3E%0A%0ACONSTRUCT%0A{%0A%20%20%3Fsubject%20a%20%3Cex%3Aitem%3E%3B%0A%20%20%20%20%20%20%20%20%20%20%20%3Fp%20%3Fo.%0A}%0AFROM%20%3Crmi%3A//tel-fedora.caret.cam.ac.uk/fedora%23ri%3E%0AWHERE%20%0A{%0A%20%20{%3Fsubject%20%3Crel%3AisMemberOfCollection%3E%20%3Fcollection.}%0A%20%20UNION%0A%20%20{%3Fsubject%20%3Crel%3AisPartOf%3E%20%3Fcollection.}%0A%20%20filter%20regex(str(%3Fcollection)%20%2C%20%22.*moamdemo%3Aroot%22%2C%20%22i%22)%0A%20%20{%0A%20%20%20%20%3Fsubject%20%3Fp%20%3Fo.%0A%20%20%20%20filter%20(regex(str(%3Fp)%2C%20%22.*dc.*%22%2C%20%22i%22))%0A%20%20}%20%0A}]
util.MortbayLogger - /sparql/
java.lang.IllegalStateException: Committed
        at org.mortbay.jetty.Response.resetBuffer(Response.java:995)
        at org.mortbay.jetty.Response.sendError(Response.java:240)
        at
org.mulgara.protocol.http.ServletException.sendResponseTo(ServletException.java:58)
        at
org.mulgara.protocol.http.ProtocolServlet.doGet(ProtocolServlet.java:216)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
        at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
        at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
        at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:320)
        at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
        at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:829)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:513)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
        at
org.mortbay.jetty.nio.BlockingChannelConnector$Connection.run(BlockingChannelConnector.java:163)
        at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)

Initially I thought it was related with my client application, which uses
HttpClient Java library, when closing connections. But then I realized it
also happens when I run queries from a web browser. Any idea?

Thanks in advance,
Agustina

2009/12/17 Paul Gearon <gearon at ieee.org>

> Due to a regression bug that was introduced with some of the recent
> optimizations, we are releasing 2.1.6 ahead of schedule. Mulgara can
> be downloaded from:
>  http://mulgara.org/download.html
>
> The changes in this release are:
> - Nested OPTIONAL operations have been fixed. These were being mangled in
> 2.1.5.
> - New functions extensions are available, bringing Mulgara in line
> with Jena's ARQ extensions. All of Jena's fn and afn functions are now
> available, as well as a couple of functions from TopQuandrant's smf
> namespace.
> - Zero argument functions are now permitted.
>
> For the full list of updates, please see the release notes and
> documentation for details.
>  Release notes: http://mulgara.org/release.html#v2.1.6
>  Documentation: http://mulgara.org/trac/wiki/Docs
>
> You can get in touch with us on the mailing lists, or submit a report
> to the bug tracker:
>  http://mulgara.org/trac/report
>
> Regards,
> Paul Gearon
> _______________________________________________
> Mulgara-dev mailing list
> Mulgara-dev at mulgara.org
> http://mulgara.org/mailman/listinfo/mulgara-dev
>
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