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https://issues.apache.org/jira/browse/LUCENE-6748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14705045#comment-14705045
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Terry Smith commented on LUCENE-6748:
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I'd add a case to the patch to include empty DisjunctionMaxQuery instances also.
> The query cache should not cache trivial queries
> ------------------------------------------------
>
> Key: LUCENE-6748
> URL: https://issues.apache.org/jira/browse/LUCENE-6748
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-6748.patch
>
>
> The query cache already avoids caching term queries because they are cheap,
> but it doesn't do it with even cheaper queries like MatchAllDocsQuery.
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