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https://issues.apache.org/jira/browse/SOLR-8812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15323993#comment-15323993
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ASF subversion and git services commented on SOLR-8812:
-------------------------------------------------------
Commit d5712fea6058ed5fe905f4e157466d117a1f38c0 in lucene-solr's branch
refs/heads/branch_6_0 from [~steve_rowe]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=d5712fe ]
SOLR-8812: CHANGES.txt entry
> ExtendedDismaxQParser (edismax) ignores Boolean OR when q.op=AND and mm is
> not explicitly set
> ---------------------------------------------------------------------------------------------
>
> Key: SOLR-8812
> URL: https://issues.apache.org/jira/browse/SOLR-8812
> Project: Solr
> Issue Type: Bug
> Components: query parsers
> Affects Versions: 5.5
> Reporter: Ryan Steinberg
> Assignee: Steve Rowe
> Fix For: 6.1, 5.5.2
>
> Attachments: SOLR-8812-barbie.patch, SOLR-8812.patch,
> SOLR-8812.patch, SOLR-8812.patch
>
>
> The edismax parser ignores Boolean OR in queries when q.op=AND. This behavior
> is new to Solr 5.5.0 and an unexpected major change.
> Example:
> "q": "id:12345 OR zzzzzzzzzz",
> "defType": "edismax",
> "q.op": "AND",
> where "12345" is a known document ID and "zzzzzzzzzz" is a string NOT present
> in my data
> Version 5.5.0 produces zero results:
> "rawquerystring": "id:12345 OR zzzzzzzzzz",
> "querystring": "id:12345 OR zzzzzzzzzz",
> "parsedquery": "(+((id:12345
> DisjunctionMaxQuery((text:zzzzzzzzzz)))~2))/no_coord",
> "parsedquery_toString": "+((id:12345 (text:zzzzzzzzzz))~2)",
> "explain": {},
> "QParser": "ExtendedDismaxQParser"
> Version 5.4.0 produces one result as expected
> "rawquerystring": "id:12345 OR zzzzzzzzzz",
> "querystring": "id:12345 OR zzzzzzzzzz",
> "parsedquery": "(+(id:12345
> DisjunctionMaxQuery((text:zzzzzzzzzz))))/no_coord",
> "parsedquery_toString": "+(id:12345 (text:zzzzzzzzzz))"
> "explain": {},
> "QParser": "ExtendedDismaxQParser"
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