Hello, we recently upgraded TDB from 0.9.4 to 0.10.1 because we needed a nice fix in the latter. However now we are seeing errors such as these.
ERROR 2013-09-17 19:21:05.026 - com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorCloseable - QueryFatalException com.hp.hpl.jena.sparql.ARQInternalErrorException: Attempt to reassign '?observation' from '< http://thoughtwire.ca/ontology/2012/08/rvhs/shiftObservation_22>' to '< http://thoughtwire.ca/ontology/2012/08/rvhs/shiftObservation_22>' at com.hp.hpl.jena.sparql.engine.binding.BindingHashMap.checkAdd(BindingHashMap.java:111) at com.hp.hpl.jena.sparql.engine.binding.BindingHashMap.add(BindingHashMap.java:92) at com.hp.hpl.jena.sparql.engine.binding.BindingFactory.materialize(BindingFactory.java:60) at com.hp.hpl.jena.tdb.solver.QueryEngineTDB$QueryIteratorMaterializeBinding.moveToNextBinding(QueryEngineTDB.java:136) at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.nextBinding(QueryIteratorBase.java:154) at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.moveToNextBinding(QueryIteratorWrapper.java:43) at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.nextBinding(QueryIteratorBase.java:154) at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.next(QueryIteratorBase.java:129) at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.next(QueryIteratorBase.java:41) at org.apache.jena.atlas.iterator.Iter$5.hasNext(Iter.java:335) at com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execConstruct(QueryExecutionBase.java:228) at com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execConstruct(QueryExecutionBase.java:204) <...snip> Can anyone shed any light on a possible cause? The error message is not very informative. Note that the queries we're using haven't changed, and neither has our code usage, only the TDB version has been altered. Thanks in advance for any advice, Vanessa
