Adrien Grand created LUCENE-7330:
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             Summary: Speed up conjunctions
                 Key: LUCENE-7330
                 URL: https://issues.apache.org/jira/browse/LUCENE-7330
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Adrien Grand
            Assignee: Adrien Grand
            Priority: Minor


I am digging into some performance regressions between 4.x and 5.x which seem 
to be due to how we always run conjunctions with ConjunctionDISI now while 4.x 
had FilteredQuery, which was optimized for the case that there are only two 
clauses or that one of the clause supports random access. I'd like to explore 
the former in this issue.



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