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https://issues.apache.org/jira/browse/SOLR-7876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14721603#comment-14721603
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Yonik Seeley commented on SOLR-7876:
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OK, I did some ad-hoc performance testing on near worst case range query on id
field and saw an 8% performance improvement on my box.
I'll plan on committing this shortly.
> Support disabling ExitableDirectory wrapper when not needed
> -----------------------------------------------------------
>
> Key: SOLR-7876
> URL: https://issues.apache.org/jira/browse/SOLR-7876
> Project: Solr
> Issue Type: Bug
> Affects Versions: 5.0, 5.1, 5.2, 5.2.1
> Reporter: Tomás Fernández Löbbe
> Fix For: Trunk, 5.4
>
> Attachments: SOLR-7876.patch
>
>
> ExitableDirectoryReader can cause some overhead in Solr for some use cases,
> even when not really used. There should be a way of not using it when not
> needed.
> See http://search-lucene.com/m/l6pAi1HLrodLhNUd
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