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Posted to issues@solr.apache.org by "David Smiley (Jira)" <ji...@apache.org> on 2022/02/07 00:50:00 UTC

[jira] [Resolved] (SOLR-15259) Lower default hl.fragAlignRatio

     [ https://issues.apache.org/jira/browse/SOLR-15259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Smiley resolved SOLR-15259.
---------------------------------
    Resolution: Fixed

> Lower default hl.fragAlignRatio
> -------------------------------
>
>                 Key: SOLR-15259
>                 URL: https://issues.apache.org/jira/browse/SOLR-15259
>             Project: Solr
>          Issue Type: Improvement
>          Components: highlighter
>            Reporter: David Smiley
>            Assignee: David Smiley
>            Priority: Minor
>             Fix For: 9.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> The {{hl.fragAlignRatio}} (for Unified Highlighter) has a large impact on performance.  The default of 0.5 tries to place the highlighted words in the middle of the fragment.  Lowering to somewhere between 0.20 and 0.33 can help a lot -- see SOLR-15246 and previously in https://lists.apache.org/thread.html/r2e44d290eac9edfa61ed9eced0d9f01a7bd1cbdf910344b2aa2368b8%40%3Csolr-user.lucene.apache.org%3E
> Lowering to 0.33 (to thus first third) is a better balance.



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