[LUCENE-6912] Grouping's Collectors should have smart needsScores()

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.5
• Component/s: modules/grouping
• Lucene Fields: New
• Assignee: David Smiley
• Reporter: David Smiley
• Created: 28/Nov/15 14:41
• Updated: 23/Feb/16 10:40
• Resolved: 04/Dec/15 19:34

Description

The Grouping module has numerous Collector implementations, and only a couple perhaps override needsScore() with an optimal choice. Lets do this for all of them.