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https://issues.apache.org/jira/browse/LUCENE-6455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14517948#comment-14517948
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ASF subversion and git services commented on LUCENE-6455:
---------------------------------------------------------

Commit 1676608 from [~jpountz] in branch 'dev/trunk'
[ https://svn.apache.org/r1676608 ]

LUCENE-6455: Require a minimum index size to enable query caching.

> Do not cache queries on small indices
> -------------------------------------
>
>                 Key: LUCENE-6455
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6455
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-6455.patch
>
>
> The query cache currently only caches on segments that are more than 3% of 
> the total index size currently. Another good condition could be to require a 
> minimum index size so that we don't end up caching on things like MemoryIndex.



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