[jira] [Resolved] (LUCENE-6360) TermsQuery should rewrite to a ConstantScoreQuery over a BooleanQuery when there are few terms

["Adrien Grand (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-6360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adrien Grand resolved LUCENE-6360.
----------------------------------
       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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