2016-03-12 01:52:18 +08:00
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1. gserver not robust enough, very easy to break out(need to deal with all kinds of exceptions).
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2. queries related with uncertain predicates are not supported.
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3. only `select` queries can be used now. All aggregate queries are not supported, as well as insert/modify/remove operations.
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4. only support RDF datasets in N-Triples format
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5. the cost of disk and memory is still very large
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2016-04-01 20:58:15 +08:00
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6. the VStree index consumes too much time and memory, and the filter effects are not good(less than 25%).
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