[LUCENE-8760] Reconsider the best way to encode postings now that we can skip non-competitive hits

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Adrien Grand
• Created: 10/Apr/19 13:00
• Updated: 28/Aug/22 15:44

Description

The fact that we now skip non competitive hits has some implications to our postings:
 - we are now more likely to call advance vs. nextDoc
 - we are less likely to read term frequency for a given doc, since we only do that if the maximum score reported by impacts is competitive

• we are less likely to read positions for a given doc, since exact phrase queries first check the maximum score that would be obtained with a phrase freq equal to the minimum of all term freqs

It might be a good opportunity to re-explore the best way to encode postings.