[LUCENE-10020] DocComparator should not skip docs with the same docID on multiple sorts with search after

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 8.10
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Mayya Sharipova
• Created: 04/Jul/21 12:31
• Updated: 28/Aug/22 16:23
• Resolved: 07/Jul/21 18:39

Description

Because of the optimization introduced in LUCENE-9449, when searching with sort on [_doc, other fields] with search after, DocComparator can efficiently skip all docs before and including the provided [search after docID].
This is a desirable behaviour in a single index search. But in a distributed search, where multiple indices have docs with the same docID, and when searching on [_doc, other fields], the sort optimization should not skip documents with the same docIDs.

Relates to LUCENE-9449

Issue Links

• links to: GitHub Pull Request #204
• links to: GitHub Pull Request #2530