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https://issues.apache.org/jira/browse/LUCENE-9568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17212887#comment-17212887
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Adrien Grand commented on LUCENE-9568:
--------------------------------------
FWIW comments in TopTermsRewrite suggests that we used to allow negative
boosts:
https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.6.3/lucene/core/src/java/org/apache/lucene/search/TopTermsRewrite.java#L163-L165.
> FuzzyTermEnums sets negative boost for fuzzy search & highlight
> ---------------------------------------------------------------
>
> Key: LUCENE-9568
> URL: https://issues.apache.org/jira/browse/LUCENE-9568
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/highlighter
> Affects Versions: 8.5.1
> Reporter: Juraj Jurčo
> Priority: Minor
> Labels: highlighting, newbie
> Attachments: FindSqlHighlightTest.java
>
>
> *Description*
> When user indexes a word with an apostrophe and constructs a fuzzy query for
> highlighter, it throws an exception with set negative boost for a query.
> *Repro Steps*
> # Index a text with apostrophe. E.g. doesn't
> # Parse a fuzzy query e.g.: se~, se~2, se~3
> # Try to highlight a text with apostrophe
> # The exception is thrown (for details see attached test test with repro
> steps)
> *Actual Result*
> {{java.lang.IllegalArgumentException: boost must be a positive float, got
> -1.0}}
> *Expected Result*
> * No exception.
> * Highlighting marks are inserted into a text.
> *Workaround*
> - not known.
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