[LUCENE-10663] KnnVectorQuery explain incorrect when multiple segments

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 9.0, 9.1, 9.2
• Fix Version/s: 9.4
• Component/s: core/search
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Shiming Li
• Created: 27/Jul/22 11:13
• Updated: 28/Aug/22 16:43
• Resolved: 28/Jul/22 17:32

Description

If there are multiple segments. KnnVectorQuery explain has a bug in locating docid. 

This is because the docid in explain, which is the docBase without the segment. 

In KnnVectorQuery.DocAndScoreQuery docs docid is increased in each segment of the docBase. 

The two docid are not in the same dimension.

So, in the 'DocAndScoreQuery.explain', needs to be added with the segment's docBase. 

Issue Links

• links to: GitHub Pull Request #1050