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Posted to issues@lucene.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2019/10/22 13:52:00 UTC

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

    [ https://issues.apache.org/jira/browse/LUCENE-8062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16957086#comment-16957086 ] 

ASF subversion and git services commented on LUCENE-8062:
---------------------------------------------------------

Commit 421718607ebcf448f9931b462cce87f1e86670ce in lucene-solr's branch refs/heads/master from jimczi
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=4217186 ]

LUCENE-8062: Update CHANGES entry after backport to 8.3


> 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: 7.2, 8.0
>
>         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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