feat(java): expose prefilter parameter to support vector search with fragments#6040
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Xuanwo merged 3 commits intolance-format:mainfrom Mar 6, 2026
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feat(java): expose prefilter parameter to support vector search with fragments#6040Xuanwo merged 3 commits intolance-format:mainfrom
Xuanwo merged 3 commits intolance-format:mainfrom
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@jackye1995 Hi, could you please take a look at this PR when you have a moment? This pr is for lance-format/lance-spark#189 |
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Hi, @jackye1995 It’s a relatively short diff. so it shouldn't take much of your time. Could you please give it a quick review when you're free.Thank you! |
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@Xuanwo Thanks for the review. I've fixed the flaky UTs |
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When performing vector queries, if a specific fragment is targeted, prefilter must be set to true to ensure correct execution. Vector queries are pushed down to shards for execution, but the returned Top-K results consist of K × number of shards records, which require manual processing by the business layer. #189 [lance-pr](lance-format/lance#6040) --------- Co-authored-by: niuyulin <niuyulin@chinamobile.com> Co-authored-by: Daniel Rammer <hamersaw@protonmail.com>
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In lance-spark, distributed vector queries rely on fragmentScanner. When a specific fragment is targeted, prefilter must be set to true to ensure correct execution. This change exposes the variable through JNI to enable this functionality.