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https://issues.apache.org/jira/browse/LUCENE-5044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless resolved LUCENE-5044.
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Resolution: Fixed
Fix Version/s: 4.4
5.0
> wasted work in AllGroupHeadsCollectorTest.arrayContains()
> ---------------------------------------------------------
>
> Key: LUCENE-5044
> URL: https://issues.apache.org/jira/browse/LUCENE-5044
> Project: Lucene - Core
> Issue Type: Bug
> Affects Versions: 4.3
> Environment: any
> Reporter: Adrian Nistor
> Priority: Minor
> Labels: patch, performance
> Fix For: 5.0, 4.4
>
> Attachments: patchAll.diff, patch.diff
>
>
> The problem appears in version 4.3.0 and in revision 1490286. I
> attached a one-line patch that fixes it.
> In method "AllGroupHeadsCollectorTest.arrayContains", the loop over
> "actual" should break immediately after "found" is set to "true". All
> the iterations after "found" is set to "true" do not perform any
> useful work, at best they just set "found" again to "true".
> Method "processWord" in class "CapitalizationFilter" has a similar
> loop (over "prefix"), and this loop breaks immediately after "match"
> is set to "false", just like in the proposed patch. Other methods
> (e.g., "Step.apply", "JapaneseTokenizer.computePenalty",
> "CompressingStoredFieldsWriter.saveInts", "FieldQuery.checkOverlap")
> also have similar loops with similar breaks, just like in the proposed
> patch.
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