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https://issues.apache.org/jira/browse/LUCENE-2690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12921015#action_12921015
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Simon Willnauer edited comment on LUCENE-2690 at 10/15/10 12:25 AM:
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Just as a first result here are the results I see on my workstation with a 10 M
Wikipedia index (5 segments):
||Query||QPS trunk||QPS LUCENE-2690||Pct diff||||
|unit state|3.74|3.81|{color:green}1.8%{color}|
|united~0.6|10.07|10.26|{color:green}1.9%{color}|
|unit*|11.89|12.65|{color:green}6.5%{color}|
|united~0.7|39.29|45.52|{color:green}15.9%{color}|
|un*d|15.17|27.86|{color:green}83.7%{color}|
using the latest patch.
those are run with Xmx2G on an intel core2 3ghz
was (Author: simonw):
Just as a first result here are the results I see on my workstation with a
10 M Wikipedia index:
||Query||QPS trunk||QPS LUCENE-2690||Pct diff||||
|unit state|3.74|3.81|{color:green}1.8%{color}|
|united~0.6|10.07|10.26|{color:green}1.9%{color}|
|unit*|11.89|12.65|{color:green}6.5%{color}|
|united~0.7|39.29|45.52|{color:green}15.9%{color}|
|un*d|15.17|27.86|{color:green}83.7%{color}|
using the latest patch.
those are run with Xmx2G on an intel core2 3ghz
> Do MultiTermQuery boolean rewrites per segment
> ----------------------------------------------
>
> Key: LUCENE-2690
> URL: https://issues.apache.org/jira/browse/LUCENE-2690
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: 4.0
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Fix For: 4.0
>
> Attachments: LUCENE-2690-attributes.patch,
> LUCENE-2690-attributes.patch, LUCENE-2690-attributes.patch,
> LUCENE-2690-hack.patch, LUCENE-2690.patch, LUCENE-2690.patch,
> LUCENE-2690.patch, LUCENE-2690.patch, LUCENE-2690.patch, LUCENE-2690.patch,
> LUCENE-2690.patch, LUCENE-2690.patch, LUCENE-2690.patch, LUCENE-2690.patch,
> LUCENE-2690.patch, LUCENE-2690.patch, LUCENE-2690.patch, LUCENE-2690.patch,
> LUCENE-2690.patch, LUCENE-2690.patch
>
>
> MultiTermQuery currently rewrites FuzzyQuery (using
> TopTermsBooleanQueryRewrite), the auto constant rewrite method and the
> ScoringBQ rewrite methods using a MultiFields wrapper on the top-level
> reader. This is inefficient.
> This patch changes the rewrite modes to do the rewrites per segment and uses
> some additional datastructures (hashed sets/maps) to exclude duplicate terms.
> All tests currently pass, but FuzzyQuery's tests should not, because it
> depends for the minimum score handling, that the terms are collected in
> order..
> Robert will fix FuzzyQuery in this issue, too. This patch is just a start.
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