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https://issues.apache.org/jira/browse/LUCENE-9762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley updated LUCENE-9762:
---------------------------------
    Summary: FunctionScoreQuery can fail when the score is requested twice  
(was: AssertionError from Lucene84PostingsReader$EverythingEnum.nextPosition)

> FunctionScoreQuery can fail when the score is requested twice
> -------------------------------------------------------------
>
>                 Key: LUCENE-9762
>                 URL: https://issues.apache.org/jira/browse/LUCENE-9762
>             Project: Lucene - Core
>          Issue Type: Bug
>    Affects Versions: 8.8
>            Reporter: Chris M. Hostetter
>            Assignee: David Smiley
>            Priority: Major
>         Attachments: LUCENE-9762.patch
>
>
> As originally reported by Nicolás Lichtmaier on the java-user list, there are 
> some trivial situations which can trigger an assertion error in the 
> PostingsReader when enumerating PhrasePositions for a sloppy PhraseQuery...
> {noformat}
> Exception in thread "main" java.lang.AssertionError
>       at 
> org.apache.lucene.codecs.lucene84.Lucene84PostingsReader$EverythingEnum.nextPosition(Lucene84PostingsReader.java:940)
>       at 
> org.apache.lucene.search.PhrasePositions.nextPosition(PhrasePositions.java:57)
>       at 
> org.apache.lucene.search.PhrasePositions.firstPosition(PhrasePositions.java:46)
>       at 
> org.apache.lucene.search.SloppyPhraseMatcher.initSimple(SloppyPhraseMatcher.java:368)
>       at 
> org.apache.lucene.search.SloppyPhraseMatcher.initPhrasePositions(SloppyPhraseMatcher.java:356)
>       at 
> org.apache.lucene.search.SloppyPhraseMatcher.reset(SloppyPhraseMatcher.java:153)
>       at org.apache.lucene.search.PhraseScorer$1.matches(PhraseScorer.java:49)
>       at 
> org.apache.lucene.search.DoubleValuesSource$WeightDoubleValuesSource$1.advanceExact(DoubleValuesSource.java:631)
>       at 
> org.apache.lucene.queries.function.FunctionScoreQuery$QueryBoostValuesSource$1.advanceExact(FunctionScoreQuery.java:343)
>       at 
> org.apache.lucene.search.DoubleValues$1.advanceExact(DoubleValues.java:53)
>       at 
> org.apache.lucene.search.DoubleValues$1.advanceExact(DoubleValues.java:53)
>       at 
> org.apache.lucene.queries.function.FunctionScoreQuery$MultiplicativeBoostValuesSource$1.advanceExact(FunctionScoreQuery.java:270)
>       at 
> org.apache.lucene.queries.function.FunctionScoreQuery$FunctionScoreWeight$1.score(FunctionScoreQuery.java:228)
>       at 
> org.apache.lucene.search.DoubleValuesSource$2.doubleValue(DoubleValuesSource.java:344)
>       at 
> org.apache.lucene.search.DoubleValues$1.doubleValue(DoubleValues.java:48)
>       at 
> org.apache.lucene.queries.function.FunctionScoreQuery$MultiplicativeBoostValuesSource$1.doubleValue(FunctionScoreQuery.java:265)
>       at 
> org.apache.lucene.queries.function.FunctionScoreQuery$FunctionScoreWeight$1.score(FunctionScoreQuery.java:229)
>       at 
> org.apache.lucene.search.TopScoreDocCollector$SimpleTopScoreDocCollector$1.collect(TopScoreDocCollector.java:76)
>       at 
> org.apache.lucene.search.Weight$DefaultBulkScorer.scoreAll(Weight.java:276)
>       at 
> org.apache.lucene.search.Weight$DefaultBulkScorer.score(Weight.java:232)
>       at org.apache.lucene.search.BulkScorer.score(BulkScorer.java:39)
>       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:659)
>       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:443)
>       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:572)
>       at 
> org.apache.lucene.search.IndexSearcher.searchAfter(IndexSearcher.java:419)
>       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:430)
>       at LuceneCrash.main(LuceneCrash.java:51)
> {noformat}
> http://mail-archives.apache.org/mod_mbox/lucene-java-user/202102.mbox/%3C177a65ec-5ec3-e1aa-99c3-b478e165d5e8%40wolfram.com%3E



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