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Andy Seaborne commented on JENA-1522: ------------------------------------- Hi Brian, I don't see anything wrong in the description. It would need a complete, minimal example. Is there anything in the Fuseki log file? What is the history of the dataset? (is it an old database used with other version?or a fresh one?) Have you tried dumping it and reloading to create a new, fresh database? > Unable to consistently retrieve data from large dataset > ------------------------------------------------------- > > Key: JENA-1522 > URL: https://issues.apache.org/jira/browse/JENA-1522 > Project: Apache Jena > Issue Type: Bug > Components: Fuseki, Jena > Affects Versions: Jena 3.6.0 > Environment: System 1: Centos 7, Jena 3.6, Unknown Fuseki version. > System 2: Ubuntu 16.04 running Docker. Running stain/jena-fuseki from the > official Docker Hub. > > Reporter: Brian Mullen > Priority: Critical > > In my 500M+ triple dataset, queries seem to be failing for no clear reason. > Here's an example. > {code:java} > prefix Products: <http://www.example.com/test/Products#> > select ?p ?o > where { > Products:ABC ?p ?o . > } > {code} > ...results in a list like: > {code:java} > Products:HasComponent Products:DEF > Products:HasComponent Products:GHI {code} > Now running this query: > {code:java} > prefix Products: <http://www.example.com/test/Products#> > select ?p > where { > Products:ABC ?p Products:DEF . > } {code} > ...has no results. How is this possible? > > Here's another example. > {code:java} > prefix Products: <http://www.example.com/test/Products#> > ask where { > Products:ABC Products:PartNumber ?p . > filter ( ?p = "ABC" ) > } {code} > This returns "True" > > {code:java} > prefix Products: <http://www.example.com/test/Products#> > ask where { > ?s Products:PartNumber ?p . > filter ( ?p = "ABC" ) > } {code} > This returns "False" > > What other info can I provide? -- This message was sent by Atlassian JIRA (v7.6.3#76005)