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Posted to issues@lucene.apache.org by "David Smiley (Jira)" <ji...@apache.org> on 2020/07/14 14:16:00 UTC

[jira] [Updated] (LUCENE-9426) UnifiedHighlighter ANALYSIS mode does not accurately highlight SpanNotQuery or NOT

     [ https://issues.apache.org/jira/browse/LUCENE-9426?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Smiley updated LUCENE-9426:
---------------------------------
    Summary: UnifiedHighlighter ANALYSIS mode does not accurately highlight SpanNotQuery or NOT  (was: UnifiedHighlighter does not handle SpanNotQuery correctly.)

> UnifiedHighlighter ANALYSIS mode does not accurately highlight SpanNotQuery or NOT
> ----------------------------------------------------------------------------------
>
>                 Key: LUCENE-9426
>                 URL: https://issues.apache.org/jira/browse/LUCENE-9426
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: modules/highlighter
>    Affects Versions: 8.5.1
>         Environment: I tested with 8.5.1, but other versions are probably also affected.
>            Reporter: Christoph Goller
>            Priority: Major
>              Labels: easyfix
>         Attachments: TestUnifiedHighlighter.java
>
>
> If UnifiedHighlighter uses MemoryIndexOffsetStrategy, it does not treat SpanNotQuery correctly.
> Since UnifiedHighlighter uses actual search in order to determine which locations to highlight, it should be consistent with search and only highlight locations in a document that really match the query. However, it does not for SpanNotQuery.
> For the query spanNot(spanNear([content:100, content:dollars], 1, true), content:thousand, 0, 0)
> it produces
> A <b>100</b> fucking <b>dollars</b> wasn't enough to fix it. ... We need <b>100</b> thousand <b>dollars</b> to buy the house



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