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https://issues.apache.org/jira/browse/SOLR-4656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13618213#comment-13618213
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Erick Erickson commented on SOLR-4656:
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P.S. I actually added two parameters,
maxMultiValuedToExamine which governs the number of multiValued fields to
examine before bailing and
maxMultiValuedToMatch which governs the number of matches to find before
bailing.
BTW, the first patch sucks. It counts matches rather than values.....
> Add hl.maxMultiValuedToExamine to limit the number of multiValued entries
> examined while highlighting
> -----------------------------------------------------------------------------------------------------
>
> Key: SOLR-4656
> URL: https://issues.apache.org/jira/browse/SOLR-4656
> Project: Solr
> Issue Type: Improvement
> Components: highlighter
> Affects Versions: 4.3, 5.0
> Reporter: Erick Erickson
> Assignee: Erick Erickson
> Priority: Minor
> Attachments: SOLR-4656-4x.patch, SOLR-4656.patch,
> SOLR-4656-trunk.patch
>
>
> I'm looking at an admittedly pathological case of many, many entries in a
> multiValued field, and trying to implement a way to limit the number
> examined, analogous to maxAnalyzedChars, see the patch.
> Along the way, I noticed that we do what looks like unnecessary copying of
> the fields to be examined. We call Document.getFields, which copies all of
> the fields and values to the returned array. Then we copy all of those to
> another array, converting them to Strings. Then we actually examine them. a>
> this doesn't seem very efficient and b> reduces the benefit from limiting the
> number of mv values examined.
> So the attached does two things:
> 1> attempts to fix this
> 2> implements hl.maxMultiValuedToExamine
> I'd _really_ love it if someone who knows the highlighting code takes a peek
> at the fix to see if I've messed things up, the changes are actually pretty
> minimal.
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