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https://issues.apache.org/jira/browse/LUCENE-6360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand resolved LUCENE-6360.
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Resolution: Fixed
Fix Version/s: 5.2
Trunk
Thanks again David!
> TermsQuery should rewrite to a ConstantScoreQuery over a BooleanQuery when
> there are few terms
> ----------------------------------------------------------------------------------------------
>
> Key: LUCENE-6360
> URL: https://issues.apache.org/jira/browse/LUCENE-6360
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Fix For: Trunk, 5.2
>
> Attachments: LUCENE-6360.patch, LUCENE-6360.patch, LUCENE-6360.patch
>
>
> TermsQuery helps when there are lot of terms from which you would like to
> compute the union, but it is a bit harmful when you have few terms since it
> cannot really skip: it always consumes all documents matching the underlying
> terms.
> It would certainly help to rewrite this query to a ConstantScoreQuery over a
> BooleanQuery when there are few terms in order to have actual skip support.
> As usual the hard part is probably to figure out the threshold. :)
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