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https://issues.apache.org/jira/browse/SOLR-3636?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jan Høydahl updated SOLR-3636:
------------------------------
Component/s: query parsers
Fix Version/s: 5.0
4.0
> edismax, synonyms and mm=100%
> -----------------------------
>
> Key: SOLR-3636
> URL: https://issues.apache.org/jira/browse/SOLR-3636
> Project: Solr
> Issue Type: Bug
> Components: query parsers
> Reporter: Lance Norskog
> Priority: Minor
> Fix For: 4.0, 5.0
>
>
> There is a problem with query-side synonyms, edismax and must-match=100%.
> edismax interprets must-match=100% as "number of terms found by edismax from
> the original query". These terms go through the query analyzer, and the
> synonym filter creates more terms, *but* the must-match term count is not
> incremented. Thus, given a synonym of
> {code}
> monkeyhouse => monkey house
> {code}
> the query {{q=big+monkeyhouse&mm=100%}} becomes (effectively)
> {{q=big+monkey+house&mm=2}}. This query finds documents matching only two out
> of three terms {{big+monkey, monkey+house, big+house}}.
> This might also be a problem in dismax.
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