Erick Erickson created SOLR-4656:
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Summary: 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
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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