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https://issues.apache.org/jira/browse/JENA-266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13398423#comment-13398423
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Andy Seaborne commented on JENA-266:
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Looks good. (I applied the patch to a scratch copy and nothing seems to have
broken!)
What would be the best way to test this?
It would be nice to have some code @Tests of IndexTable, and some script tests
(we can get the latter from SPARQL 1.1 test suite).
> MINUS operations too slow
> -------------------------
>
> Key: JENA-266
> URL: https://issues.apache.org/jira/browse/JENA-266
> Project: Apache Jena
> Issue Type: Improvement
> Components: ARQ
> Reporter: Paul Gearon
> Assignee: Rob Vesse
> Attachments: arq.patch
>
>
> MINUS operations use an N^2 algorithm when evaluating. Despite the data being
> placed on the heap, an operating removing ~100k bindings from ~500k bindings
> takes >15 minutes on desktop systems (15 minutes being the time at which the
> process is killed. It may take significantly longer).
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