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Multi-threaded vector search over multiple segments can lead to inconsistent results #14180

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benwtrent opened this issue Jan 29, 2025 · 0 comments
Open

Multi-threaded vector search over multiple segments can lead to inconsistent results #14180

benwtrent opened this issue Jan 29, 2025 · 0 comments
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Related to: #14167

But multi-threaded search over multiple segments in addition to multi-leaf collection (e.g. information sharing) can lead to consistent results at low k values.

It is possible to get more consistent results, and likely remove most inconsistencies by simply gathering more neighbors (k in the query, fanout in lucene util, or efSearch if you will...). However, while HNSW search is approximate, we should strive for consistency.

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