Gilles Habran created JENA-1337:
-----------------------------------
Summary: Trying to write an infered model to a String or a file
never ends
Key: JENA-1337
URL: https://issues.apache.org/jira/browse/JENA-1337
Project: Apache Jena
Issue Type: Bug
Affects Versions: Jena 3.2.0, Jena 3.1.1
Reporter: Gilles Habran
Good morning,
I am trying to print an infered model but it never ends.
The ontologies I am using are huge and can be found here :
http://publications.europa.eu/mdr/cdm/index.html
I tried with an OWL Reasoner or a Micro OWL Reasoner.
I created a small project with a Main class, a model and the ontologies here to
show the problem : https://gitlab.com/gillouche/jena-perf
The thread dump shows that kind of stacktrace:
{code:java}
"main" #1 prio=5 os_prio=0 tid=0x00007f22f403f000 nid=0x3330 runnable
[0x00007f22fbc92000]
java.lang.Thread.State: RUNNABLE
at java.util.LinkedList.remove(LinkedList.java:364)
at
org.apache.jena.reasoner.rulesys.impl.LPBRuleEngine.detach(LPBRuleEngine.java:233)
- locked <0x00000005cfe72990> (a
org.apache.jena.reasoner.rulesys.impl.LPBRuleEngine)
at
org.apache.jena.reasoner.rulesys.impl.LPInterpreter.close(LPInterpreter.java:168)
at
org.apache.jena.reasoner.rulesys.impl.Generator.setComplete(Generator.java:160)
at
org.apache.jena.reasoner.rulesys.impl.Generator.postCompletionCheckScan(Generator.java:371)
at
org.apache.jena.reasoner.rulesys.impl.Generator.checkForCompletions(Generator.java:313)
at
org.apache.jena.reasoner.rulesys.impl.LPBRuleEngine.pump(LPBRuleEngine.java:364)
at
org.apache.jena.reasoner.rulesys.impl.LPTopGoalIterator.moveForward(LPTopGoalIterator.java:107)
- locked <0x00000005d58aa060> (a
org.apache.jena.reasoner.rulesys.impl.LPTopGoalIterator)
- locked <0x00000005cfe72990> (a
org.apache.jena.reasoner.rulesys.impl.LPBRuleEngine)
at
org.apache.jena.reasoner.rulesys.impl.LPTopGoalIterator.hasNext(LPTopGoalIterator.java:223)
at
org.apache.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at
org.apache.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at
org.apache.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:55)
at
org.apache.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at
org.apache.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:55)
at
org.apache.jena.util.iterator.Map1Iterator.hasNext(Map1Iterator.java:49)
at
org.apache.jena.util.iterator.NiceIterator.asSet(NiceIterator.java:208)
at
org.apache.jena.util.iterator.NiceIterator.toSet(NiceIterator.java:199)
at org.apache.jena.graph.GraphUtil.listSubjects(GraphUtil.java:50)
at
org.apache.jena.riot.writer.RDFJSONWriter.output(RDFJSONWriter.java:76)
at
org.apache.jena.riot.writer.RDFJSONWriter.output(RDFJSONWriter.java:51)
at
org.apache.jena.riot.writer.RDFJSONWriter.write(RDFJSONWriter.java:63)
at
org.apache.jena.riot.adapters.RDFWriterRIOT.write(RDFWriterRIOT.java:74)
at org.apache.jena.rdf.model.impl.ModelCom.write(ModelCom.java:358)
at Main.main(Main.java:72)
{code}
In a Java Mission Control, the LinkedList.remove() hot methods take 80%.
If I don't infer the model, I can print it without any problem.
Note : I have another project using SHACL to validate an infered model against
shapes. A simple model can be validated with SHACL but an infered model cannot
be. The stacktrace of the thread dumps block with the same code
(LPInterpreter.close() then LinkedList.remove()).
Would you have any idea what's happening?
Thank you.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
