I tried it out today and it works for me as expected: * loaded the Wikidata HDT dump
* setup Fuseki 3.5.0 + updated HDT libs in classpath * the default config from HDT site with the correct HDT file name set indeed Used CURL from command line: curl -X GET 'http://localhost:3030/hdtservice/query?query=SELECT%20%3Fs%0AWHERE%20%7B%20%3Fs%20a%20%3Chttp%3A%2F%2Fwikiba.se%2Fontology-beta%23Item%3E%20%7D%0ALIMIT%2010%0AOFFSET%2020000000' Result (returned almost instantly): { "head": { "vars": [ "s" ] } , "results": { "bindings": [ { "s": { "type": "uri" , "value": "http://www.wikidata.org/entity/Q30656914" } } , { "s": { "type": "uri" , "value": "http://www.wikidata.org/entity/Q30656915" } } , { "s": { "type": "uri" , "value": "http://www.wikidata.org/entity/Q30656916" } } , { "s": { "type": "uri" , "value": "http://www.wikidata.org/entity/Q30656917" } } , { "s": { "type": "uri" , "value": "http://www.wikidata.org/entity/Q30656918" } } , { "s": { "type": "uri" , "value": "http://www.wikidata.org/entity/Q30656919" } } , { "s": { "type": "uri" , "value": "http://www.wikidata.org/entity/Q3065692" } } , { "s": { "type": "uri" , "value": "http://www.wikidata.org/entity/Q30656920" } } , { "s": { "type": "uri" , "value": "http://www.wikidata.org/entity/Q30656921" } } , { "s": { "type": "uri" , "value": "http://www.wikidata.org/entity/Q30656922" } } ] } } Thus, no problem with Apache Jean Fuseki - at least not when querying with the service. Some questions: * Have you ever tried to use CURL instead of the GUI? * Have you tried any other query in the GUI with any other small HDT dataset? It might also be some issue within the GUI + HDT * Do you use the built-in Fuseki of the HDT package which in fact is Fuseki1? On 15.12.2017 14:16, Laura Morales wrote: >> It seems equally true to say that you haven't seen this problem with Fuseki, >> unless you use HDT. That's why I'm asking you to investigate a bit further >> to find the problem. > Since other people here have been able to create the wikidata TDB (Andy?), > can somebody please try to run a Fuseki instance with the wikidata TDB, and > execute the query from the Fuseki UI?