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?

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