[SOLR-6062] Phrase queries are created for each field supplied through edismax's pf, pf2 and pf3 parameters (rather them being combined in a single dismax query)

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 4.0
• Fix Version/s: 4.10
• Component/s: query parsers
• Assignee: Erik Hatcher
• Reporter: Michael Dodsworth
• Created: 13/May/14 05:42
• Updated: 08/Oct/14 15:14
• Resolved: 13/Aug/14 13:08

Description

SOLR-2058 subtly changed how phrase queries, created through the pf, pf2 and pf3 parameters, are merged into the main user query.

For the query: 'term1 term2' with pf2:[field1, field2, field3] we now get (omitting the non phrase query section for clarity):

<main query>
DisjunctionMaxQuery((field1:"term1 term2"^1.0)~0.1)
DisjunctionMaxQuery((field2:"term1 term2"^1.0)~0.1)
DisjunctionMaxQuery((field3:"term1 term2"^1.0)~0.1)

Prior to this change, we had:

<main query> 
DisjunctionMaxQuery((field1:"term1 term2"^1.0 | field2:"term1 term2"^1.0 | field3:"term1 term2"^1.0)~0.1)

The upshot being that if the phrase query "term1 term2" appears in multiple fields, it will get a significant boost over the previous implementation.

Issue Links

• is duplicated by: SOLR-6243 eDisMax hidden change - no longer applies disjunction max to "pf" query
• is duplicated by: SOLR-6600 configurable relevance impact of phrases for edismax
• is related to: SOLR-2058 Adds optional "phrase slop" to edismax "pf2", "pf3" and "pf" parameters with field~slop^boost syntax