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#16418 PR: Incremental doc-values updates
39.4 minutes ago  0 comments  0 votes  0 watches  github-actions[bot], jimczi
Incremental doc-values updates When you update a doc-values field today, Lucene rewrites the ... So a tiny change writes a lot, and it gets worse as the segment grows. The idea is simple: when an update only sets values (no unset), write just the changed docs as a ...

#16420: HNSW-wrapped scalar-quantized fields never hit the centroid fast-path: every delete-free merge ...
44.5 minutes ago  0 comments  0 votes  0 watches  john-mlika
Description Lucene104ScalarQuantizedVectorsWriter.mergeAndRecalculateCentroids has a fast path ... It is unreachable for HNSW-wrapped fields — that is, for Lucene104HnswScalarQuantizedVectorsFormat: ... That pass is one of **four** full reads the merge makes of each source .vec — the checkIntegritychec ...

#16419: branch_10x: KnnVectorsReader.finishMerge() has no caller — merges permanently flip shared vector ...
44.6 minutes ago  0 comments  0 votes  0 watches  john-mlika
Description On branch_10x, KnnVectorsReaderfinishMerge() is dead code: nothing in the branch calls ... The revert half of the merge read-advice machinery is disconnected, so every merge of a vector ... The advice sticks until the segment reader is closed.

#16220 PR: used WANDScorer.advanceShallow() to enable block-max optimizations when nested in conjunctions
9.2 hours ago  8 comments  0 votes  0 watches  costin, github-actions[bot], iprithv, jimczi, romseygeek
used WANDScorer.advanceShallow() so that WAND queries nested inside conjunctions can skip blocks ...
    jimczi 9.2 hours ago:  Small question: do we need upTo here at all? newUpTo is already a valid boundary on its own (case B forces it below any not-yet-matching scorer, ... Clamping down to the internal upTo can only shrink the block and skip less.
    jimczi 9.2 hours ago:  LGTM, thanks for working on this! Nice to have nested WAND skip blocks instead of treating the whole segment as one. Will merge soon.

#15549 PR: Add half-float (FP16) storage support for vectors
19.2 hours ago  49 comments  0 votes  0 watches  Pulkitg64, benwtrent, github-actions[bot], mikemccand, msokolov, rmuir, romseygeek
Description This draft PR explores storing float vectors using 2 bytes (half-float/FP16) ... The approach involves storing vectors on disk in half-float format while converting them back to ... However, this conversion step introduces additional overhead during vector reads, resulting in ...
    github-actions[bot] 19.2 hours ago:  This PR has not had activity in the past 2 weeks, labeling it as stale. If the PR is waiting for review, notify the dev@lucene.apache.org list. Thank you for your contribution!
    Pulkitg64 15.1 days ago:  Raised this new PR just with Float16 encoding support without any scalar quantization support link

#16248 PR: Allocate postings payload buffers only when the query requests them
19.2 hours ago  2 comments  0 votes  0 watches  github-actions[bot], slow-J
Currently the payloadLengthBuffer, payloadBytes, payload are allocated when indexHasPayloads, but ... (Also needsPayloads depends on indexHasPayloads being true). Gating the allocation on needsPayloads would bring payloads to parity with the buffers in ...
    github-actions[bot] 19.2 hours ago:  This PR has not had activity in the past 2 weeks, labeling it as stale. If the PR is waiting for review, notify the dev@lucene.apache.org list. Thank you for your contribution!
    github-actions[bot] 17.8 days ago:  This PR has not had activity in the past 2 weeks, labeling it as stale. If the PR is waiting for review, notify the dev@lucene.apache.org list. Thank you for your contribution!

#16294 PR: Route doc-values queries through ConstantScoreScorerSupplier
19.2 hours ago  1 comments  0 votes  0 watches  costin, github-actions[bot]
Replace DefaultScorerSupplier with ConstantScoreScorerSupplier in five constant-score doc-values ... Same pattern as 16143
    github-actions[bot] 19.2 hours ago:  This PR has not had activity in the past 2 weeks, labeling it as stale. If the PR is waiting for review, notify the dev@lucene.apache.org list. Thank you for your contribution!

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