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https://issues.apache.org/jira/browse/LUCENE-6118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14253291#comment-14253291
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ASF subversion and git services commented on LUCENE-6118:
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Commit 1646674 from [~jpountz] in branch 'dev/trunk'
[ https://svn.apache.org/r1646674 ]
LUCENE-6118: Improve the efficiency of the history structure for recently-used
filters.
> Improve efficiency of the history structure for filter caching
> --------------------------------------------------------------
>
> Key: LUCENE-6118
> URL: https://issues.apache.org/jira/browse/LUCENE-6118
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-6118.patch, LUCENE-6118.patch
>
>
> The filter caching uses a ring buffer that tracks frequencies of the
> hashcodes of the most-recently used filters. However it is based on an
> ArrayDeque<Integer> and a HashMap<Integer> which keep on (un)wrapping ints.
> Since the data-structure is very simple, we could try to do something
> better...
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