Rupert Westenthaler created CLEREZZA-745:
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Summary: ConcurrentModicationException on TDB storage provider
(SingleDataset)
Key: CLEREZZA-745
URL: https://issues.apache.org/jira/browse/CLEREZZA-745
Project: Clerezza
Issue Type: Bug
Reporter: Rupert Westenthaler
As reported by Minto van der Sluis in [1] the SingleDataset Jena TDB TcProvider
can throw .ConcurrentModificationException when iterating over a read protected
MGraph and a modification is done to an other graph managed in the same Jena
TDB Dataset. This includes creating a new graph in the dataset.
Based on a first analysis this is caused by the Single Dataset Jena TDB
TcProvider using per TripleCollections ReadWrite Locks instead of a single
ReadWrite Lock for all graphs managed by the same Jena TDB Dataset.
[1]
http://mail-archives.apache.org/mod_mbox/clerezza-dev/201303.mbox/%3C5140A9CD.1010208%40xup.nl%3E
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