Hi  Heiko,

We are looking into this issue and shall report back when it is resolved ...

Best Regards
Hugh Williams
Professional Services
OpenLink Software, Inc.      //              http://www.openlinksw.com/
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On 7 May 2012, at 17:08, Heiko Paulheim wrote:

> Hi all,
> 
> I am recurringly running into the following kind of error:
> 
> Virtuoso 42000 Error CL...: cluster distributed fragment message went missing 
> for too long, probable network error sending to 2
> 
> A sample query provoking this behavior is
> 
> SELECT  (count(?x) AS ?c)
> WHERE
>   { ?z0<http://dbpedia.org/ontology/genus>  ?x .
>     ?z0<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>  
> <http://dbpedia.org/ontology/Mollusca>  .
>     ?z1<http://dbpedia.org/ontology/genus>  ?x .
>     ?z1<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>  
> <http://www.w3.org/2002/07/owl#Thing>
>     OPTIONAL
>       { ?y<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>  
> <http://dbpedia.org/class/yago/GastropodGeneraWithSingleSpecies>
>         FILTER sameTerm(?x, ?y)
>       }
>     FILTER ( ! bound(?y) )
>   }
> 
> Any ideas?
> 
> Best regards,
> Heiko.
> 
> 
> -- 
> Dr. Heiko Paulheim
> Knowledge Engineering Group
> Technische Universität Darmstadt
> Phone: +49 6151 16 6634
> Fax:   +49 6151 16 5482
> http://www.ke.tu-darmstadt.de/staff/heiko-paulheim
> 
> 
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Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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