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https://issues.apache.org/jira/browse/LUCENE-1483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655048#action_12655048
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Mark Miller commented on LUCENE-1483:
-------------------------------------
Doing a little profiling on the new code and off the top results of interest
are:
FieldSortedHitQueue.lessThan(object,object) approx 12%
FieldSortedHitQueue.insertWIthOverflow(object) approx 12%
MultiReaderTopFieldDocCollector.collect(int,float) 6.3%
FieldSortedHitQueue$4.compare() 5.3 %
and on...
> Change IndexSearcher to use MultiSearcher semantics for sorted searches
> -----------------------------------------------------------------------
>
> Key: LUCENE-1483
> URL: https://issues.apache.org/jira/browse/LUCENE-1483
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: 2.9
> Reporter: Mark Miller
> Priority: Minor
> Attachments: LUCENE-1483.patch, LUCENE-1483.patch
>
>
> Here is a quick test patch. FieldCache for sorting is done at the individual
> IndexReader level and reloading the fieldcache on reopen can be much faster
> as only changed segments need to be reloaded.
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