[LUCENE-4598] Change PayloadIterator to not use top-level reader API

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.1, 6.0
• Component/s: modules/facet
• Lucene Fields: New, Patch Available
• Assignee: Shai Erera
• Reporter: Michael McCandless
• Created: 07/Dec/12 15:31
• Updated: 28/Aug/22 13:33
• Resolved: 10/Dec/12 13:36

Description

Currently the facet module uses MultiFields.* to pull the D&PEnum in PayloadIterator, to access the payloads that store the facet ords.

It then makes heavy use of .advance and .getPayload to visit all docIDs in the result set.

I think we should get some speedup if we go segment by segment instead ...