When executing the query in the forum topic Query not working when reasoning is on - #6 by zachary.whitley with reasoning profile DL selected I get the following exception in the logs
ERROR 2019-09-26 12:32:21,118 [stardog-user-3] com.complexible.stardog.protocols.http.server.StardogHttpServiceLoader:accept(231): An unexpected exception was handled by the server
com.stardog.stark.query.QueryExecutionFailure: null
at com.complexible.common.rdf.query.IteratorAsTupleQueryResult.hasNext(IteratorAsTupleQueryResult.java:82) ~[stardog-utils-rdf-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.TransactionManagedQueryResult.hasNext(TransactionManagedQueryResult.java:61) ~[stardog-7.0.1.jar:?]
at com.stardog.stark.query.ClosingSpliterator.forEachRemaining(ClosingSpliterator.java:37) ~[stardog-stark-query-api-7.0.1.jar:?]
at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:647) ~[?:1.8.0_222]
at com.stardog.stark.query.io.QueryResultWriters.write(QueryResultWriters.java:142) ~[stardog-stark-query-io-7.0.1.jar:?]
at com.stardog.stark.query.io.QueryResultWriters.write(QueryResultWriters.java:127) ~[stardog-stark-query-io-7.0.1.jar:?]
at com.complexible.stardog.protocols.http.server.ProtocolUtils.writeTupleResponse(ProtocolUtils.java:570) ~[stardog-protocols-http-server-7.0.1.jar:?]
at com.complexible.stardog.protocols.http.server.ProtocolUtils.executeReadQuery(ProtocolUtils.java:480) ~[stardog-protocols-http-server-7.0.1.jar:?]
at com.complexible.stardog.protocols.http.server.ProtocolUtils.executeReadQuery(ProtocolUtils.java:464) ~[stardog-protocols-http-server-7.0.1.jar:?]
at com.complexible.stardog.protocols.http.server.SPARQLProtocol.executeQuery(SPARQLProtocol.java:127) ~[stardog-protocols-http-server-7.0.1.jar:?]
at com.complexible.stardog.protocols.http.server.SPARQLProtocol.post(SPARQLProtocol.java:92) ~[stardog-protocols-http-server-7.0.1.jar:?]
at java.lang.invoke.DirectHandle.invokeExact_thunkArchetype_V(DirectHandle.java:177) ~[?:1.8.0_222]
at java.lang.invoke.AsTypeHandle.invokeExact_thunkArchetype_X(AsTypeHandle.java:49) ~[?:1.8.0_222]
at com.stardog.http.server.undertow.jaxrs.ExtractRoutes.lambda$handleIt$5(ExtractRoutes.java:192) ~[stardog-protocols-http-server-7.0.1.jar:?]
at com.stardog.http.server.undertow.jaxrs.ExtractRoutes$$Lambda$649.00000000D59EBAB0.run(Unknown Source) ~[?:?]
at org.apache.shiro.subject.support.SubjectRunnable.doRun(SubjectRunnable.java:120) [shiro-core-1.3.0.jar:1.3.0]
at org.apache.shiro.subject.support.SubjectRunnable.run(SubjectRunnable.java:108) [shiro-core-1.3.0.jar:1.3.0]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
at java.lang.Thread.run(Thread.java:819) [?:1.8.0_222]
Caused by: java.util.NoSuchElementException
at com.google.common.collect.Iterators.find(Iterators.java:699) ~[guava-26.0-jre.jar:?]
at com.google.common.collect.Iterables.find(Iterables.java:631) ~[guava-26.0-jre.jar:?]
at com.clarkparsia.pellet.api.query.impl.DefaultQueryEngine.execute(DefaultQueryEngine.java:205) ~[stardog-reasoning-shared-7.0.1.jar:?]
at com.clarkparsia.pellet.api.query.impl.DefaultQueryEngine.execute(DefaultQueryEngine.java:87) ~[stardog-reasoning-shared-7.0.1.jar:?]
at com.clarkparsia.pellet.api.query.impl.AbstractQueryEngine.visit(AbstractQueryEngine.java:104) ~[stardog-reasoning-shared-7.0.1.jar:?]
at com.clarkparsia.pellet.api.query.impl.AbstractQueryEngine.visit(AbstractQueryEngine.java:33) ~[stardog-reasoning-shared-7.0.1.jar:?]
at com.clarkparsia.pellet.api.query.impl.SelectQueryImpl.accept(SelectQueryImpl.java:43) ~[stardog-reasoning-shared-7.0.1.jar:?]
at com.clarkparsia.pellet.api.query.impl.AbstractQueryEngine.execute(AbstractQueryEngine.java:42) ~[stardog-reasoning-shared-7.0.1.jar:?]
at com.complexible.stardog.reasoning.pellet.PelletUtils.executeQuery(PelletUtils.java:89) ~[stardog-reasoning-core-7.0.1.jar:?]
at com.complexible.stardog.reasoning.pellet.PelletOp.computeNext(PelletOp.java:84) ~[stardog-reasoning-core-7.0.1.jar:?]
at com.complexible.stardog.reasoning.pellet.PelletOp.computeNext(PelletOp.java:35) ~[stardog-reasoning-core-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.tryToComputeNext(AbstractSkippingIterator.java:147) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.hasNext(AbstractSkippingIterator.java:134) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.UnionOp.computeNext(UnionOp.java:85) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.UnionOp.computeNext(UnionOp.java:22) ~[stardog-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.tryToComputeNext(AbstractSkippingIterator.java:147) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.hasNext(AbstractSkippingIterator.java:134) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.UnionOp.computeNext(UnionOp.java:82) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.UnionOp.computeNext(UnionOp.java:22) ~[stardog-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.tryToComputeNext(AbstractSkippingIterator.java:147) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.hasNext(AbstractSkippingIterator.java:134) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.LoopJoin.computeNext(LoopJoin.java:196) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.LoopJoin.computeNext(LoopJoin.java:25) ~[stardog-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.tryToComputeNext(AbstractSkippingIterator.java:147) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.hasNext(AbstractSkippingIterator.java:134) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.LoopJoin.computeNext(LoopJoin.java:196) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.LoopJoin.computeNext(LoopJoin.java:25) ~[stardog-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.tryToComputeNext(AbstractSkippingIterator.java:147) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.hasNext(AbstractSkippingIterator.java:134) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.SingleProjectionOp.computeNext(SingleProjectionOp.java:82) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.impl.SingleProjectionOp.computeNext(SingleProjectionOp.java:29) ~[stardog-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.tryToComputeNext(AbstractSkippingIterator.java:147) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.hasNext(AbstractSkippingIterator.java:134) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.util.AutoCloseOperator.computeNext(AutoCloseOperator.java:114) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.util.AutoCloseOperator.computeNext(AutoCloseOperator.java:26) ~[stardog-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.tryToComputeNext(AbstractSkippingIterator.java:147) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.common.collect.AbstractSkippingIterator.hasNext(AbstractSkippingIterator.java:134) ~[stardog-utils-common-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.util.OpBasedBindingSetIteration.computeNext(OpBasedBindingSetIteration.java:119) ~[stardog-7.0.1.jar:?]
at com.complexible.stardog.plan.eval.operator.util.OpBasedBindingSetIteration.computeNext(OpBasedBindingSetIteration.java:40) ~[stardog-7.0.1.jar:?]
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:141) ~[guava-26.0-jre.jar:?]
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:136) ~[guava-26.0-jre.jar:?]
at com.complexible.common.rdf.query.IteratorAsTupleQueryResult.hasNext(IteratorAsTupleQueryResult.java:78) ~[stardog-utils-rdf-7.0.1.jar:?]
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