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Posted to dev@lucene.apache.org by "Jim Ferenczi (JIRA)" <ji...@apache.org> on 2017/11/28 14:33:00 UTC

[jira] [Resolved] (LUCENE-8062) Never cache GlobalOrdinalQuery

     [ https://issues.apache.org/jira/browse/LUCENE-8062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jim Ferenczi resolved LUCENE-8062.
----------------------------------
    Resolution: Fixed

> Never cache GlobalOrdinalQuery
> ------------------------------
>
>                 Key: LUCENE-8062
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8062
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Jim Ferenczi
>            Priority: Minor
>             Fix For: master (8.0), 7.2
>
>         Attachments: LUCENE-8062.patch, LUCENE-8062.patch
>
>
> GlobalOrdinalsQuery holds a possibly large bitset of global ordinals that can pollute the query cache because the size of the query is not accounted in the memory usage of the cache.
> Moreover two instances of this query must share the same top reader context to be considered equal so they are not the ideal candidate for segment level caching.



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