Bugs item #2640943, was opened at 2009-02-26 20:13 Message generated for change (Comment added) made by justinjohansson You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=713730&aid=2640943&group_id=129076
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Query Execution Group: Sedna (current) Status: Open Resolution: Accepted Priority: 9 Private: No Submitted By: Ivan Shcheklein (shcheklein) Assigned to: Ivan Shcheklein (shcheklein) Summary: Infinite recursion may crash Sedna Initial Comment: ### Bug report replaces first part of the ### PR/2636813 (https://sourceforge.net/tracker/?func=detail&aid=2636813&group_id=129076&atid=713730) se_trn.exe process may crash because of (say) infinite recursion in XQuery (apparently causing stack overflow), invalid characters and so on. When a crash happens, the system dialog shows up prompting to debug the process. Suggestion: Add something like top-level exception handler to se_trn.exe code, so that even if fatal exception occurs, the process still finishes gracefully with appropriate diagnostic information. On Windows, the event log is a good place where to submit diagnostic information. ---------------------------------------------------------------------- Comment By: Justin Johansson (justinjohansson) Date: 2009-08-18 17:46 Message: No problem. Was just wondering the status of it. Good luck. ---------------------------------------------------------------------- Comment By: Ivan Shcheklein (shcheklein) Date: 2009-08-18 16:47 Message: Hi Justin, We are sill working on it. Unfortunately some bugs are not very easy to fix (. ---------------------------------------------------------------------- Comment By: Justin Johansson (justinjohansson) Date: 2009-08-18 10:47 Message: Hi Ivan, Please can you say what is the current status for fixing this bug? It seems to be an ongoing issue. For example, the following recursive query brings down Sedna in a rather unfriendly fashion: declare function local:count($xs) { if ( empty( $xs)) then 0 else 1 + local:count(subsequence($xs,2)) }; local:count( 1 to 2000) Regards Justin Johansson ---------------------------------------------------------------------- Comment By: Ivan Shcheklein (shcheklein) Date: 2009-04-15 17:44 Message: Nope. Simply this query is a very long running I believe. It returns 1 billion values approx. Since WikiXMLdb demo have a restriction in 60 seconds per query it can not be completely executed there. ---------------------------------------------------------------------- Comment By: Nobody/Anonymous (nobody) Date: 2009-04-15 01:13 Message: The end of that code snippet should be: where $a = $b return $a ---------------------------------------------------------------------- Comment By: Nobody/Anonymous (nobody) Date: 2009-04-15 01:12 Message: This XQuery crashes Senda ?: declare default element namespace "http://www.mediawiki.org/xml/export-0.3/";; for $a in index-scan('article-by-title','NASA','EQ')//link/@label/string(.) for $b in index-scan('article-by-title','Outer space','EQ')//link/@label/string(.) for $c in index-scan('article-by-title','Satellite','EQ')//link/@label/string(.) for $d in index-scan('article-by-title','Project Gemini','EQ')//link/@label/string(.) for $e in index-scan('article-by-title','Radar','EQ')//link/@label/string(.) return $a ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=713730&aid=2640943&group_id=129076 ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Sedna-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sedna-discussion
