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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2016/02/29 11:06:18 UTC
[jira] [Resolved] (LUCENE-7050) Improve the query cache heuristic
to detect costly queries
[ https://issues.apache.org/jira/browse/LUCENE-7050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adrien Grand resolved LUCENE-7050.
----------------------------------
Resolution: Fixed
Fix Version/s: 6.0
> Improve the query cache heuristic to detect costly queries
> ----------------------------------------------------------
>
> Key: LUCENE-7050
> URL: https://issues.apache.org/jira/browse/LUCENE-7050
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Fix For: 6.0
>
> Attachments: LUCENE-7050.patch
>
>
> Term queries, phrase queries and their combinations through boolean queries should not be cached too agressively since they can efficiently make use of skip lists. However we also have a number of queries that in practice need to visit all matches anyway like PrefixQuery, TermsQuery, PointInSetQuery, PointRangeQuery, so caching them more agressively can help avoid computing all documents that match in the whole index again and again.
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