[LUCENE-6869] When executing MoreLikeThis with multiple fields, it should create a query considering all fieldNames

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 5.3
• Component/s: core/query/scoring, core/queryparser
• Labels: morelikethis
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Pedro Rosanes
• Created: 29/Oct/15 18:52
• Updated: 28/Aug/22 14:45

Description

When executing MLT with multiple fields, it should
considerem them all

If a document has the same term in multiple fields, the
mlt generates a query considering only the field with
the higher idf. This commit changes the behaviour, to
include in the query all fieldnames.

Eg.:
Last behaviour:
Doc ("fieldName1", "value")
("fieldName2", "value")

Old behaviour generates query: "fieldName1:value"
New Behaviour generates query: "fieldName1:value
fieldName2:value"

Proposed solution:
https://github.com/prosanes/lucene-solr/pull/1/files