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Posted to dev@lucene.apache.org by "Robert Muir (JIRA)" <ji...@apache.org> on 2010/10/04 22:04:32 UTC
[jira] Updated: (LUCENE-2687) Remove Priority-Queue size trap in
MultiTermQuery.TopTermsBooleanQueryRewrite
[ https://issues.apache.org/jira/browse/LUCENE-2687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Muir updated LUCENE-2687:
--------------------------------
Attachment: LUCENE-2687.patch
all tests pass with the fix.
> Remove Priority-Queue size trap in MultiTermQuery.TopTermsBooleanQueryRewrite
> -----------------------------------------------------------------------------
>
> Key: LUCENE-2687
> URL: https://issues.apache.org/jira/browse/LUCENE-2687
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Affects Versions: 3.1, 4.0
> Reporter: Robert Muir
> Priority: Minor
> Fix For: 3.1, 4.0
>
> Attachments: LUCENE-2687.patch
>
>
> These APIs are new in 3.x, so we can do this with no backwards-compatibility issue:
> Before 3.1, FuzzyQuery had its own internal rewrite method.
> We exposed this in 3.x as TopTermsBooleanQueryRewrite, and then as subclasses for Scoring and Boost-only variants.
> The problem I have is that the PQ has a default (large) size of Integer.MAX_VALUE... of course its later limited by
> the value of BooleanQuery's maxClauseCount, but I think this is a trap.
> Instead its better to simply remove these defaults and force the user to provide a default (reasonable) size.
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