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https://issues.apache.org/jira/browse/LUCENE-7903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16597041#comment-16597041
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David Smiley commented on LUCENE-7903:
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Note this is tested in TestUnifiedHighlighter.testNestedBooleanQueryAccuracy
> Highlighting boolean queries shouldn't always highlight some clauses
> --------------------------------------------------------------------
>
> Key: LUCENE-7903
> URL: https://issues.apache.org/jira/browse/LUCENE-7903
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/highlighter
> Reporter: Damian Pawski
> Priority: Minor
>
> I am having difficulties with getting correct "highlighting" section from
> Solr.
> My query returns correct results, only highlighting does not work as I would
> expected.
> My query:
> http://solrServer/solr/solrCore/select?q=(((field1:((word1)AND(word2)))%20OR%20(field2:((word1)AND(word2)))%20OR%20(field3:((word1)AND(word2)))%20OR%20(field4:((word1)AND(word2)))))&fq=field5:(xxxx)&hl=true&hl.q=field1:(word1)&hl.fl=field1,field2,field3,field4
> If I run this query the highlighting section is correct - there is no
> document with phrase "word1" - therefore field1 is not listed in the
> highlighting element - correct.
> If I update my query to:
> http://solrServer/solr/solrCore/select?q=(((field1:((word1)AND(word2)))%20OR%20(field2:((word1)AND(word2)))%20OR%20(field3:((word1)AND(word2)))%20OR%20(field4:((word1)AND(word2)))))&fq=field5:(xxxx)&hl=true&hl.q=field1:(word1
> OR word2)&hl.fl=field1,field2,field3,field4
> then I am not getting expected results, word2 has been found in field1 but
> word1 is missing, but Solr returned field1 in highlighting element with
> highlighted "word2" only.
> I have explicitly added an extra query using hl.q and I have used AND
> operator (word1 AND word2), why Solr returns field1 in case when only word2
> has been found?
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