[LUCENE-10351] Correct knn search failure with all deleted docs

• Type: Bug
• Status: Closed
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 9.1
• Labels: vector-based-search
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Mayya Sharipova
• Created: 03/Jan/22 15:17
• Updated: 28/Aug/22 16:33
• Resolved: 04/Jan/22 21:59

Description

Current when doing knn search on an segment where all documents with knn field were deleted, we get the following error:

maxSize must be > 0 and < 2147483630; got: 0
java.lang.IllegalArgumentException: maxSize must be > 0 and < 2147483630; got: 0
at __randomizedtesting.SeedInfo.seed([43F1F124D7076A4E:1B860BFCCB9B0BB5]:0)
at org.apache.lucene.util.LongHeap.<init>(LongHeap.java:57)
at org.apache.lucene.util.LongHeap$1.<init>(LongHeap.java:69)
at org.apache.lucene.util.LongHeap.create(LongHeap.java:69)
at org.apache.lucene.util.hnsw.NeighborQueue.<init>(NeighborQueue.java:41)
at org.apache.lucene.util.hnsw.HnswGraph.search(HnswGraph.java:105)#

A desired behaviour: instead of an error, an empty TopDocs should be returned.

Issue Links

• links to: GitHub Pull Request #580