Hi Henrik, The “MaxQueryCostEstimationTime"param should never be set in the INI file in production use as it is used for Cost Optimizer estimates and are generally not accurate and is more a development/debug param. Thus the only one that should be set to control query execution time is “MaxQueryExecutionTime".
Best Regards Hugh Williams Professional Services OpenLink Software, Inc. // http://www.openlinksw.com/ Weblog -- http://www.openlinksw.com/blogs/ LinkedIn -- http://www.linkedin.com/company/openlink-software/ Twitter -- http://twitter.com/OpenLink Google+ -- http://plus.google.com/100570109519069333827/ Facebook -- http://www.facebook.com/OpenLinkSoftware Universal Data Access, Integration, and Management Technology Providers > On 6 Dec 2017, at 09:03, Henrik Schmidt <h...@informatik.uni-kiel.de> wrote: > > Hi, > > is there a way to make good use of MaxQueryCostEstimationTime to prevent > extremly long running queries ? > > For the 'real' SELECT query we want to use the jena provider but the > idea is to first ask the SPARQL port 1111 to check whether the query is > immediately rejected due to MaxQueryCostEstimationTime. > > Of course we do not want the query to than complete on port 1111 in case > it is not rejected but want to use the jena provider instead. > > On a related note is it possible to get a more specific exception > instead of 'HTTP 500 error making the query: SPARQL Request Failed' when > MaxQueryCostEstimationTime is triggered ? > > How accurate is MaxQueryCostEstimationTime ? The virtuoso database is > running in a tmpfs (ca 50GB RAM) and has about 850 million triples. > > Best, > > Henrik > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Virtuoso-users mailing list > Virtuoso-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/virtuoso-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Virtuoso-users mailing list Virtuoso-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtuoso-users
