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MikoĊaj Kania commented on SOLR-2649: ------------------------------------- We have lately encountered a problem with the current edismax behaviour, when {code}((x y z) AND (a)){code} gave the same results as {code}((x or y or z) and (a)){code} instead of {code}(a and b and c and d){code}. Our mm was set to 100% so it was really unexpected! What's more, {code} x y z{code} is the same as {code}x AND y AND z{code} and as {code}x AND y z{code}, so the behaviour is experience-driven, nondeterministic. It would be nice to see patches applied as the issue is now the most upvoted, open task. > MM ignored in edismax queries with operators > -------------------------------------------- > > Key: SOLR-2649 > URL: https://issues.apache.org/jira/browse/SOLR-2649 > Project: Solr > Issue Type: Bug > Components: query parsers > Reporter: Magnus Bergmark > Assignee: Erick Erickson > Priority: Minor > Fix For: 4.9, Trunk > > Attachments: SOLR-2649-with-Qop.patch, SOLR-2649-with-Qop.patch, > SOLR-2649.diff, SOLR-2649.patch > > > Hypothetical scenario: > 1. User searches for "stocks oil gold" with MM set to "50%" > 2. User adds "-stockings" to the query: "stocks oil gold -stockings" > 3. User gets no hits since MM was ignored and all terms where AND-ed > together > The behavior seems to be intentional, although the reason why is never > explained: > // For correct lucene queries, turn off mm processing if there > // were explicit operators (except for AND). > boolean doMinMatched = (numOR + numNOT + numPluses + numMinuses) == 0; > (lines 232-234 taken from > tags/lucene_solr_3_3/solr/src/java/org/apache/solr/search/ExtendedDismaxQParserPlugin.java) > This makes edismax unsuitable as an replacement to dismax; mm is one of the > primary features of dismax. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org