[LUCENE-10126] CompetitiveIterator of NumericComparator can wrongly skip documents

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 8.9, 8.10
• Fix Version/s: 8.11, 8.10.1
• Component/s: core/search
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Nhat Nguyen
• Created: 27/Sep/21 22:37
• Updated: 28/Aug/22 16:26
• Resolved: 04/Oct/21 19:12

Description

The ML team at Elastic reported that a large scroll with an Elasticsearch nightly build that uses Lucene 9.0 snapshot returns fewer documents than expected. I looked into it and found that the competitive iterator can wrongly skip docs with a chunked bulk scorer.

Issue Links

• links to: GitHub Pull Request #324
• links to: GitHub Pull Request #326
• links to: GitHub Pull Request #331
• links to: GitHub Pull Request #2588