Sebastian Schaffert created MARMOTTA-80:
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             Summary: Improve KiWi SPARQL evaluation for certain queries
                 Key: MARMOTTA-80
                 URL: https://issues.apache.org/jira/browse/MARMOTTA-80
             Project: Marmotta
          Issue Type: Task
          Components: Triple Store
            Reporter: Sebastian Schaffert
            Assignee: Sebastian Schaffert
             Fix For: 3.1-incubating


We are currently relying completely on the in-memory evaluation of SPARQL 
queries, which is inefficient in certain cases, e.g. complex joins or simple 
queries. We should therefore implement an evaluation strategy that allows more 
efficiently evaluating certain parts of a SPARQL query, e.g.:
- joins between triple patterns
- certain kinds of filter joins
- simple aggregation queries

The rest should be based on the normal evaluation strategy offered by Sesame.

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