Reto Bachmann-Gmür created CLEREZZA-833:
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             Summary: SingleTdbTcProvider listTripleCollection method do not 
support concurrency
                 Key: CLEREZZA-833
                 URL: https://issues.apache.org/jira/browse/CLEREZZA-833
             Project: Clerezza
          Issue Type: Bug
            Reporter: Reto Bachmann-Gmür


The method return a Set (concretely a UriRefSet). The client has no 
(straight-forward) possibility to aquire a lock when iterating over the set. So 
when the client iterates over the set in a concurrent environment (i.e when 
another thread adds/removes  a triple to any graph) 
ConcurrentModificationException will occur.



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