Current implementation of fuzzy and wildcard queries inappropriately
implemented as Boolean query rewrites
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Key: LUCENE-524
URL: http://issues.apache.org/jira/browse/LUCENE-524
Project: Lucene - Java
Type: Improvement
Components: Search
Versions: 1.9
Reporter: Randy Puttick
The implementation of MultiTermQuery in terms of BooleanQuery introduces
several problems:
1) Collisions with maximum clause limit on boolean queries which throws an
exception. This is most problematic because it is difficult to ascertain in
advance how many terms a fuzzy query or wildcard query might involve.
2) The boolean disjunctive scoring is not appropriate for either fuzzy or
wildcard queries. In effect the score is divided by the number of terms in the
query which has nothing to do with the relevancy of the results.
3) Performance of disjunctive boolean queries for large term sets is quite
sub-optimal
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