Hi Andy, Thank you for the prompt reply.
I deleted everything in my tdb2 directory in order to force Fuseki to recreate the database from scratch so I knew I was working from a clean slate. I was able to duplicate your results, using my own D.ttl, which is below. <http://triples.ms.com/msro/dummy> <http://www.w3.org/2001/XMLSchema#string> "dummy" . I then loaded the dummy triple into a named graph using the curl command below. curl -T D.ttl --header 'Content-type: text/turtle' \ 'http://localhost:3030/msro/data?graph=https%3A%2F%2Ftriples.ms.com%2Fmsro%2F__dummy__' I was able to dump the named graph using the command below. curl 'http://localhost:3030/msro/data?graph=https%3A%2F%2Ftriples.ms.com%2Fmsro%2F__dummy__' I then stopped and restarted Fuseki, and the triple in the named graph was gone. The triple in the default graph was still there. Also, I monitored the size of Data-0001\nodes-data.obj at every step. Upon creation of a fresh database, it was 0 KB. It remained 0 KB even if I loaded my dummy triple into a named graph. Only when I loaded my dummy triple into the default graph did it grow to 1 KB. It remained 1KB across restarts. So, the problem seems to be that triples in the default graph persist, but triples in named graphs do not. The only inferencing I need is subclass inferencing in order for a query of this form to work: ?s rdfs:subClassOf+ ?c . Once I layered in the TransitiveReasoner in the config file, the above query worked fine in the midst of a complicated and well-tested query that runs fine on Stardog and MarkLogic. As mentioned, I was getting the desired results on Fuseki TDB2 as well. The only problem seems to be the lack of persistence for named graphs. Thanks so much for your attention to this problem! Theodore Hills Consultant | Research Phone: +1 212 296-1833 theodore.hi...@morganstanley.com -----Original Message----- From: Andy Seaborne <a...@apache.org> Sent: Saturday, October 15, 2022 5:41 AM To: users@jena.apache.org Subject: Re: TDB2 Data Doesn't Persist Hi Theodore, I tried your configuration and got persisted data. I tried: curl -T D.ttl --header 'Content-type: text/turtle' \ 'http://localhost:3030/msro/data?default' this appeared in the file: [2022-10-15 10:36:19] Fuseki INFO [3] Body: Content-Length=338, Content-Type=text/turtle, Charset=null => Turtle : Count=4 Triples=4 Quads=0 (reformatted for email). then I stopped the server, restarted it and did curl 'http://localhost:3030/msro/data?default' and got the data with inference output. How are you loading the data? Looking in "C:\\Users\\hillsthe\\run\\data\\tdb2", there is a file Data-0001/nodes-data.obj. How big it is it after loading the data? You can look while the server is running. Does it shrink when the server is stopped? It's zero bytes for an empty database, non-zero otherwise. ---- Also - for general information - you're using the transitive reasoner What inferences are you hoping to generate? Andy On 14/10/2022 15:09, theodore.hi...@morganstanley.com wrote: > Hello, > > I have Apache Jena Fuseki running on my localhost with TDB2 configured with > inferencing. See entire config file below. I am running Fuseki server under > Windows 10 with the following command line issued from a CMD prompt. > > C:\Users\hillsthe\apache-jena-fuseki-4.6.1\fuseki-server.bat --conf > C:\Users\hillsthe\config.ttl > > I can do updates and queries and everything works as expected. However, if I > stop the Fuseki server with a Control-C, and restart it with the above > command, my graphs are empty. Any insights? > > Theodore Hills > Consultant | Research > Phone: +1 212 296-1833 > theodore.hi...@morganstanley.com<mailto:Theodore.Hills@morganstanley.c > om> > > ## Fuseki Server configuration file. > > PREFIX fuseki: http://jena.apache.org/fuseki# > PREFIX rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# > PREFIX rdfs: http://www.w3.org/2000/01/rdf-schema# > PREFIX tdb1: http://jena.hpl.hp.com/2008/tdb# > PREFIX tdb2: http://jena.apache.org/2016/tdb# > PREFIX ja: http://jena.hpl.hp.com/2005/11/Assembler# > PREFIX : <#> > > > <#service1> rdf:type fuseki:Service ; > fuseki:name "msro" ; # http://host:port/msro > fuseki:endpoint [ # http://host:port/msro/sparql?query= > fuseki:operation fuseki:query ; > fuseki:name "sparql" > ] ; > fuseki:endpoint [ # http://host:port/msro/query?query= > # SPARQL query service (alt name) > fuseki:operation fuseki:query ; > fuseki:name "query" > ] ; > > fuseki:endpoint [ # http://host:port/msro/update?query= > # SPARQL update service > fuseki:operation fuseki:update ; > fuseki:name "update" > ] ; > > fuseki:endpoint [ > # SPARQL Graph Store Protocol (read) > fuseki:operation fuseki:gsp_r ; > fuseki:name "get" > ] ; > fuseki:endpoint [ > # SPARQL Graph Store Protcol (read and write) > # http://host:port/msro/data?default or > http://host:port/msro/data?graph=<URL<http://host:port/msro/data?graph=%3cURL>> > fuseki:operation fuseki:gsp_rw ; > fuseki:name "data" > ] ; > > fuseki:dataset <#dataset> ; > . > > <#dataset> rdf:type ja:RDFDataset; > ja:defaultGraph <#inferenceModel> > . > > <#inferenceModel> rdf:type ja:InfModel; > ja:reasoner [ ja:reasonerURL > http://jena.hpl.hp.com/2003/TransitiveReasoner ]; > ja:baseModel <#baseModel>; > . > > <#baseModel> rdf:type tdb2:GraphTDB2; > tdb2:dataset <#actualDataset> . > > <#actualDataset> rdf:type tdb2:DatasetTDB2; > tdb2:location "C:\\Users\\hillsthe\\run\\data\\tdb2"; > . > > > ________________________________ > > For important information including analyst certification and disclosures > regarding specific companies, derivatives, or other instruments discussed in > this email, please refer to the latest report, if attached and/or hyperlinked > to this email, or by logging on to the Morgan Stanley Matrix Platform at > http://matrix.ms.com/eqr/research . 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