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https://issues.apache.org/jira/browse/LUCENE-6909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15027070#comment-15027070
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ASF subversion and git services commented on LUCENE-6909:
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Commit 1716477 from [~mikemccand] in branch 'dev/branches/branch_5x'
[ https://svn.apache.org/r1716477 ]
LUCENE-6909: remove unnecessary synchronized keyword
> Improve concurrency for FacetsConfig
> ------------------------------------
>
> Key: LUCENE-6909
> URL: https://issues.apache.org/jira/browse/LUCENE-6909
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/other
> Affects Versions: 5.3
> Reporter: Sanne Grinovero
> Priority: Trivial
> Attachments:
> 0001-LUCENE-6909-Allow-efficient-concurrent-usage-of-a-Fa.patch
>
>
> The design of {{org.apache.lucene.facet.FacetsConfig}} encourages reuse of a
> single instance across multiple threads, yet the current synchronization
> model is too strict as it doesn't allow for concurrent read operations.
> I'll attach a trivial patch which removes the contention point.
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