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Posted to dev@lucene.apache.org by "Grant Ingersoll (JIRA)" <ji...@apache.org> on 2007/12/10 22:24:43 UTC
[jira] Updated: (LUCENE-1017) BoostingTermQuery performance
[ https://issues.apache.org/jira/browse/LUCENE-1017?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Grant Ingersoll updated LUCENE-1017:
------------------------------------
Priority: Minor (was: Major)
Lucene Fields: [New, Patch Available] (was: [Patch Available, New])
> BoostingTermQuery performance
> -----------------------------
>
> Key: LUCENE-1017
> URL: https://issues.apache.org/jira/browse/LUCENE-1017
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Affects Versions: 2.2
> Environment: all
> Reporter: Peter Keegan
> Priority: Minor
> Attachments: BoostingTermQuery.java, BoostingTermQuery.patch, termquery.patch
>
>
> I have been experimenting with payloads and BoostingTermQuery, which I think are excellent additions to Lucene core. Currently, BoostingTermQuery extends SpanQuery. I would suggest changing this class to extend TermQuery and refactor the current version to something like 'BoostingSpanQuery'.
> The reason is rooted in performance. In my testing, I compared query throughput using TermQuery against 2 versions of BoostingTermQuery - the current one that extends SpanQuery and one that extends TermQuery (which I've included, below). Here are the results (qps = queries per second):
> TermQuery: 200 qps
> BoostingTermQuery (extends SpanQuery): 97 qps
> BoostingTermQuery (extends TermQuery): 130 qps
> Here is a version of BoostingTermQuery that extends TermQuery. I had to modify TermQuery and TermScorer to make them public. A code review would be in order, and I would appreciate your comments on this suggestion.
> Peter
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