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Posted to dev@lucene.apache.org by "Uwe Schindler (JIRA)" <ji...@apache.org> on 2009/11/10 23:47:27 UTC
[jira] Closed: (LUCENE-1557) Make constant-score rewrite the
default for multi-term queries
[ https://issues.apache.org/jira/browse/LUCENE-1557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Uwe Schindler closed LUCENE-1557.
---------------------------------
Resolution: Invalid
This issue is no longer relevant. All classes were deprecated and there is nothing to change anymore.
> Make constant-score rewrite the default for multi-term queries
> --------------------------------------------------------------
>
> Key: LUCENE-1557
> URL: https://issues.apache.org/jira/browse/LUCENE-1557
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: 2.4.1
> Reporter: Michael McCandless
> Assignee: Uwe Schindler
> Priority: Minor
> Fix For: 3.0
>
>
> 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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