[SOLR-10442] xtendedDismaxQParser (edismax) makes pf* require search term exactly

• Type: Bug
• Status: Reopened
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 6.5
• Component/s: query parsers
• Assignee: Unassigned
• Reporter: Nikolay Martynov
• Created: 06/Apr/17 19:49
• Updated: 08/Jun/19 15:23

Description

Request like:

    "params":{
      "q": "cat AND dog",
      "q.op": "AND",
      "defType":"edismax",
      "qf":"description",
      "pf2":"description"
}

produces query like this:

"parsedquery_toString":"+(+(description.en:cat) +(description.en:dog)) (+(description.en:\"cat dog\"))"

Solr 4.6.1 produces different parsing of this query:

"parsedquery_toString": "+(+(description.en:cat) +(description.en:dog)) (description.en:\"cat dog\")",

Replacing q.op=AND with q.op=OR in newer Solr produces same query as old Solr despite the fact that it would seem that this change should not make a difference.

This issue is probably related to SOLR-8812 - looks like it is just one more case of same problem. It also would mean that change occurred in version range specified there - unfortunately I would not be able to test that.

This looks like a change in behaviour is not quite expected: now introducing pf2 searches for documents that must have 'cat dog' phrase instead of just boosting such documents.

Please let me know if more information is required.