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Posted to issues@solr.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2022/02/04 21:14:00 UTC

[jira] [Commented] (SOLR-12901) Make UnifiedHighlighter the default

    [ https://issues.apache.org/jira/browse/SOLR-12901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17487309#comment-17487309 ] 

ASF subversion and git services commented on SOLR-12901:
--------------------------------------------------------

Commit 101296f606f1fe60c3c804ca8bc5d541fad243d9 in solr's branch refs/heads/main from David Smiley
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=101296f ]

SOLR-12901: make hl.method=unified the default (#579)

* fixed minor assertion failure about a RTimer state that could be wrong if the request is re-used
* did not switch ClusteringComponent; it will take more care, can happen later
* custom SolrHighlighter impls have to be chosen with hl.method=original

* Remove PostingsSolrHighlighter (deprecated), missed from SOLR-13138

> Make UnifiedHighlighter the default
> -----------------------------------
>
>                 Key: SOLR-12901
>                 URL: https://issues.apache.org/jira/browse/SOLR-12901
>             Project: Solr
>          Issue Type: Improvement
>          Components: highlighter
>            Reporter: David Smiley
>            Assignee: David Smiley
>            Priority: Blocker
>             Fix For: 9.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> I think the UnifiedHighlighter should be the default in 8.0.  It's faster and more accurate than alternatives.
> The original highlighter however has some benefits:
> * Different passage/snippet delineation options; somewhat more flexible.  Though no i18n BreakIterator based one.
> * Seems to handle some "special" Queries and/or QueryParsers by default better -- namely SurroundQParser.  Though SOLR-12895 will address this UH issue.
> * Considers boosts in the query when computing a passage score
> * hl.alternateField, hl.maxAlternateFieldLength, hl.highlightAlternate options.  Instead the UH has hl.defaultSummary boolean
> See https://builds.apache.org/job/Solr-reference-guide-master/javadoc/highlighting.html



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