[jira] [Created] (JENA-624) Develop a new in-memory RDF Dataset implementation

["Andy Seaborne (JIRA)" <ji...@apache.org>]

Andy Seaborne created JENA-624:
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             Summary: Develop a new in-memory RDF Dataset implementation
                 Key: JENA-624
                 URL: https://issues.apache.org/jira/browse/JENA-624
             Project: Apache Jena
          Issue Type: Improvement
            Reporter: Andy Seaborne


The current (Jan 2014) Jena in-memory dataset uses a general purpose container that works for any storage technology for graphs together with in-memory graphs.  

This project would develop a new implementation design specifically for RDF datasets (triples and quads) and efficient SPARQL execution, for example, using multi-core parallel operations and/or multi-version concurrent datastructures to maximise true parallel operation.

This is a system project suitable for someone interested in datatbase implementation, datastructure design and implementation, operating systems or distributed systems.

Note that TDB can operate in-memory using a simulated disk with copy-in/copy-out semantics for disk-level operations.  It is for faithful testing TDB infrastructure and is not designed performance, general in-memory use or use at scale.  While lesson may be learnt from that system, TDB in-memory is not the answer here.




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