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  1. Lucene - Core
  2. LUCENE-1557

Make constant-score rewrite the default for multi-term queries

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Minor
    • Resolution: Invalid
    • Affects Version/s: 2.4.1
    • Fix Version/s: 3.0
    • Component/s: None
    • Labels:
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    • Lucene Fields:
      New

      Description

      For queries that expand to multiple terms (PrefixQuery, RangeQuery, FuzzyQuery, WildcardQuery), the default now is to rewrite to a BooleanQuery, which scales poorly, and can hit the dreaded TooManyClauses (ungraceful degradation).

      Except for FuzzyQuery (which we should fix with this issue), they all support setConstantScoreRewrite, which scales better.

      In 3.0 we should make constantScoreRewrite the default, and leave an option to turn it off.

      This is a spinoff from LUCENE-998.

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            • Assignee:
              thetaphi Uwe Schindler
              Reporter:
              mikemccand Michael McCandless
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              • Created:
                Updated:
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