Alex Shneyderman wrote:
> I get this exception now:
> 
> Caused by: org.openrdf.repository.RepositoryLockedException: SAIL is
> already locked by: 26...@tompicsek in ./rdf-stores/rdf-indexing
>       at 
> org.openrdf.repository.sail.SailRepository.initialize(SailRepository.java:90)
>       at 
> org.qi4j.library.rdf.repository.NativeRepositoryMixin.activate(NativeRepositoryMixin.java:68)
>       at 
> org.qi4j.library.rdf.repository.NativeRepositoryService.activate(Unknown
> Source)
>       at org.qi4j.spi.service.Activator.activate(Activator.java:51)
>       at 
> org.qi4j.runtime.service.ServiceReferenceInstance.getInstance(ServiceReferenceInstance.java:108)
>       at 
> org.qi4j.runtime.service.ServiceReferenceInstance.access$100(ServiceReferenceInstance.java:36)
>       at 
> org.qi4j.runtime.service.ServiceReferenceInstance$ServiceInvocationHandler.invoke(ServiceReferenceInstance.java:161)
>       at $Proxy24.getConnection(Unknown Source)
>       at 
> org.qi4j.entity.index.rdf.internal.RdfEntityIndexerMixin.notifyChanges(RdfEntityIndexerMixin.java:73)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>       at java.lang.reflect.Method.invoke(Method.java:597)
>       at 
> org.qi4j.runtime.composite.TypedFragmentInvocationHandler.invoke(TypedFragmentInvocationHandler.java:41)
>       at 
> org.qi4j.runtime.composite.MethodConcernsInstance.invoke(MethodConcernsInstance.java:46)
>       at 
> org.qi4j.runtime.composite.CompositeMethodInstance.invoke(CompositeMethodInstance.java:50)
>       at 
> org.qi4j.runtime.composite.AbstractMixinsModel.invoke(AbstractMixinsModel.java:239)
>       at 
> org.qi4j.runtime.composite.CompositeModel.invoke(CompositeModel.java:153)
>       at 
> org.qi4j.runtime.composite.DefaultCompositeInstance.invoke(DefaultCompositeInstance.java:120)
>       at 
> org.qi4j.runtime.composite.CompositeMethodModel.invoke(CompositeMethodModel.java:105)
>       at 
> org.qi4j.runtime.composite.CompositeMethodsModel.invoke(CompositeMethodsModel.java:75)
>       at 
> org.qi4j.runtime.composite.CompositeModel.invoke(CompositeModel.java:159)
>       at 
> org.qi4j.runtime.composite.DefaultCompositeInstance.invoke(DefaultCompositeInstance.java:57)
>       at 
> org.qi4j.runtime.service.ServiceReferenceInstance$ServiceInvocationHandler.invoke(ServiceReferenceInstance.java:166)
>       at $Proxy25.notifyChanges(Unknown Source)
> 
> The exception stack is much longer. I can not even catch the top of it
> in IDEA's console but this exception seems to be recurring.

My guess is that the indexing files are corrupted somehow. Can you look 
in /rdf-stores/rdf-indexing and clear those files, and see if that helps?

/Rickard


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