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https://issues.apache.org/jira/browse/LUCENE-4368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13451569#comment-13451569
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Uwe Schindler commented on LUCENE-4368:
---------------------------------------
In general you shoul definitly *not* pass Integer.MAX_VALUE to
IndexSearcher.search()! This would cause *all* results to be collected, which
is not a correct use case of this method. It would use IndexReader.maxDoc()
while collecting.
> make sentinel object in HitQueue a singleton?
> ---------------------------------------------
>
> Key: LUCENE-4368
> URL: https://issues.apache.org/jira/browse/LUCENE-4368
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/search
> Affects Versions: 4.0-BETA
> Reporter: Steven Bethard
> Assignee: Uwe Schindler
>
> Via jvisualvm, I see that one of my Lucene processes is spending a lot of
> time in HitQueue.getSentinelObject. That's a very simple method that
> currently looks like:
> protected ScoreDoc getSentinelObject() {
> return new ScoreDoc(Integer.MAX_VALUE, Float.NEGATIVE_INFINITY);
> }
> Since the same sentinel is always returned, perhaps the sentinel should be
> declared as a static variable on HitQueue and then getSentinelObject() would
> just return that static value?
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