DrillSidewaysScorer should utilize competitive iterators [LUCENE-10090]
Open
legacy-jira-priority:Minor
module:facet
type:enhancement
- Dominant language
- Java
- Stars
- 3.6k
- Forks
- 1.4k
- Avg merge
- 2d 11h
- Merged PRs (30d)
- 88
Description
Unlike `DefaultBulkScorer`, `DrillSidewaysScorer` doesn't utilize the collective iterator capabilities that `LeafCollector` instances can optionally expose. We should see an improvement by intersecting with a competitive iterator in DSS.
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Migrated from [LUCENE-10090](https://issues.apache.org/jira/browse/LUCENE-10090) by Greg Miller (@gsmiller), updated Nov 11 2021
Contributor guide
Research direction
Start by comparing DrillSidewaysScorer with DefaultBulkScorer, then inspect how LeafCollector exposes competitive iterators. The change is complete when DrillSidewaysScorer intersects with a competitive iterator and the relevant behavior or performance improvement is verified.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- search
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100