Re: [MonetDB-users] MonetDB XQuery Module Crash
Hi all,
I read the discussion, and I might have experienced the same kind of problem before. I think there is some problem with the naming (when a document is previously shredded with the same name as a 'cached' document). At the time I experienced the problem I couldn't figure out what the exact problem was, but removing the dbfarm worked for me:
So perhaps you could try to:
- stop Mserver
- completely remove the dbfarm-folder (defaultpath is
"$PREFIX/var/MonetDB/dbfarm") (hopefully you don't have important XML documents stored in the database ;)
- start Mserver
- and then run the large query (without running any other queries first)?
Thank you very much, everything works fine now! Just removed all dbfarm subdirectories and the error message disappeared. And no, there were no important XML documents stored in the database, only some XMark generated streams ;-)!
Nevertheless: I never shredded any document before encountering the problem the first time. Before I /only/ used direct loading from the query. I just tried shredding to solve the problem...
Hope this helps to locate the bug!
Cheers Michael _____________________________________________________________________ Der WEB.DE SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! http://smartsurfer.web.de/?mc=100071&distributionid=000000000071
I'm glad I could help out.
I have reported it as a bug, although I don't really know what exactly causes the problem. I haven't found a way to reproduce the bug. If you can reproduce it, please let us know.
Can you perhaps remember if you at any time after you installed MonetDB and before the error appeared, bailed out (pressed Ctrl-C or something like that: "killall Mserver", a power failure...) during the execution of a query? and in particular during the 100 or 200 MB query?
Sorry for bothering you with more questions again, but the bug does not pop up often, so any input is welcome.
Greetings, Wouter
-----Original Message----- From: monetdb-users-bounces@lists.sourceforge.net [mailto:monetdb-users-bounces@lists.sourceforge.net] On Behalf Of Michael Schmidt Sent: dinsdag 11 juli 2006 20:44 To: Wouter Alink Cc: Monetdb-users@lists.sourceforge.net Subject: Re: [MonetDB-users] MonetDB XQuery Module Crash
Hi all,
I read the discussion, and I might have experienced the same kind of problem before. I think there is some problem with the naming (when a document is previously shredded with the same name as a 'cached' document). At the time I experienced the problem I couldn't figure out what the exact problem was, but removing the dbfarm worked for me:
So perhaps you could try to:
- stop Mserver
- completely remove the dbfarm-folder (defaultpath is
"$PREFIX/var/MonetDB/dbfarm") (hopefully you don't have important XML documents stored in the database ;)
- start Mserver
- and then run the large query (without running any other queries first)?
Thank you very much, everything works fine now! Just removed all dbfarm subdirectories and the error message disappeared. And no, there were no important XML documents stored in the database, only some XMark generated streams ;-)!
Nevertheless: I never shredded any document before encountering the problem the first time. Before I /only/ used direct loading from the query. I just tried shredding to solve the problem...
Hope this helps to locate the bug!
Cheers Michael _____________________________________________________________________ Der WEB.DE SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! http://smartsurfer.web.de/?mc=100071&distributionid=000000000071
------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&da... _______________________________________________ MonetDB-users mailing list MonetDB-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/monetdb-users
Wouter,
Thank you very much! Well done!
... both solving this one and submitting the bug report: http://sourceforge.net/tracker/index.php?func=detail&aid=1520735&gro...
Stefan
On Tue, Jul 11, 2006 at 09:39:35PM +0200, Wouter Alink wrote:
I'm glad I could help out.
I have reported it as a bug, although I don't really know what exactly causes the problem. I haven't found a way to reproduce the bug. If you can reproduce it, please let us know.
Can you perhaps remember if you at any time after you installed MonetDB and before the error appeared, bailed out (pressed Ctrl-C or something like that: "killall Mserver", a power failure...) during the execution of a query? and in particular during the 100 or 200 MB query?
Sorry for bothering you with more questions again, but the bug does not pop up often, so any input is welcome.
Greetings, Wouter
-----Original Message----- From: monetdb-users-bounces@lists.sourceforge.net [mailto:monetdb-users-bounces@lists.sourceforge.net] On Behalf Of Michael Schmidt Sent: dinsdag 11 juli 2006 20:44 To: Wouter Alink Cc: Monetdb-users@lists.sourceforge.net Subject: Re: [MonetDB-users] MonetDB XQuery Module Crash
Hi all,
I read the discussion, and I might have experienced the same kind of problem before. I think there is some problem with the naming (when a document is previously shredded with the same name as a 'cached' document). At the time I experienced the problem I couldn't figure out what the exact problem was, but removing the dbfarm worked for me:
So perhaps you could try to:
- stop Mserver
- completely remove the dbfarm-folder (defaultpath is
"$PREFIX/var/MonetDB/dbfarm") (hopefully you don't have important XML documents stored in the database ;)
- start Mserver
- and then run the large query (without running any other queries first)?
Thank you very much, everything works fine now! Just removed all dbfarm subdirectories and the error message disappeared. And no, there were no important XML documents stored in the database, only some XMark generated streams ;-)!
Nevertheless: I never shredded any document before encountering the problem the first time. Before I /only/ used direct loading from the query. I just tried shredding to solve the problem...
Hope this helps to locate the bug!
Cheers Michael _____________________________________________________________________ Der WEB.DE SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! http://smartsurfer.web.de/?mc=100071&distributionid=000000000071
Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&da... _______________________________________________ MonetDB-users mailing list MonetDB-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/monetdb-users
Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&da... _______________________________________________ MonetDB-users mailing list MonetDB-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/monetdb-users
participants (3)
-
Michael Schmidt -
Stefan Manegold -
Wouter Alink