Cache BitSet per IndexReader in MatchAllScorer
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                 Key: JCR-791
                 URL: https://issues.apache.org/jira/browse/JCR-791
             Project: Jackrabbit
          Issue Type: Improvement
          Components: query
            Reporter: Marcel Reutegger
            Priority: Minor


The BitSets created in MatchAllScorer should be cached per IndexReader. This 
enhancement should also take care that the supplied IndexReader may in fact be 
a CombinedIndexReader or a CachingMultiReader with multiple contained 
IndexReaders. To achieve a good cache efficiency the BitSets must be cached per 
contained IndexReader and combined later.

See also thread on dev list: 
http://thread.gmane.org/gmane.comp.apache.jackrabbit.devel/10976

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