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#16708 PR: Validate vector values in columnar addBatch
1.1 hours ago  0 comments  0 votes  0 watches  github-actions[bot], mayya-sharipova
KnnFloatVectorField, KnnFloat16VectorField and KnnByteVectorField reject non-finite components, and ... The VectorColumn path in IndexingChain only checked doc ids and the dimension, so addBatch accepted ... Add the equivalent checks to ColumnValidation and apply them for every vector consumed from a ...

#16145 PR: MemorySegmentIndexInput: always prefetch on RANDOM mode
3.1 hours ago  24 comments  0 votes  0 watches  github-actions[bot], goankur, iprithv, jimczi, michaeljmarshall, mikemccand, navneet1v, neoremind, uschindler
Description The power-of-two back off in MemorySegmentIndexInput.prefetch() assumes consecutive ... That assumption breaks for ReadAdvice.RANDOM, where each request accesses unpredictable pages — a ... HNSW graph traversal touches a different path per query).
    michaeljmarshall 4 hours ago:  I started thinking about this more last week. I am hopeful to get the design finalized and merged soon. It'll probably diverge from my initial proposal.
    neoremind 17.9 hours ago:  Thanks @goankur ! Your real workload finding matches what I saw above with microbenchmarks across on hot/mixed/cold ... The backoff counter is two sides of the same coin: it's great when data is hot, and roughly a no-op ...

#16691 PR: Optimize DocValues bulk decoding using Panama widening casts (#16677)
5.4 hours ago  5 comments  0 votes  0 watches  CH-Abhinav, github-actions[bot], rmuir
Description This PR introduces SIMD bulk decoding for DocValues (8-bit, 16-bit, and 32-bit ... Currently, default scalar loops handle these widening. This PR tries to use Panama Vector API's shape-widening operations (convertShape with ...
    CH-Abhinav 5.4 hours ago:  Hey @rmuir did a blank commit to trigger CI. Are there any other suggestion or this PR is good to merge ?
    CH-Abhinav 3.1 days ago:  this CI has issue in one of the randomized test which I am trying to resolve in 16693 after that ...

#16446 PR: MultiFieldQueryParser: default operator is not honored between term positions (#16443)
6.6 hours ago  27 comments  0 votes  0 watches  OlivierJaquemet, epotyom, github-actions[bot]
Fixes 16443 **Problem:** MultiFieldQueryParser's javadoc promises that under AND_OPERATOR, "all ... This only holds when each term reaches the parser as a separate grammar-level token (real ... It doesn't hold when several terms are produced by the *analyzer alone* from a single piece of ...
    OlivierJaquemet 6.6 hours ago:  I'm sorry, but you totally lost me there 😅. Just so you know, locally I ran all the tests of this branch, rebased on your PR, and it passes ... Would you like me to run more tests ?
    OlivierJaquemet 6.8 hours ago:  I had to create 2 protected methods, because the rewriting differs: - in testRange : part of query ... ..

#16628 PR: Fp16 re ranking and prefetch support
6.9 hours ago  3 comments  0 votes  0 watches  Pulkitg64, github-actions[bot], goankur
Description We are adding FP16 support in Lucene. In #16383 we added the initial fp16 encoding and in #16473 we added scalar quantization support. This PR adds the re-ranking, approximate similarity, and prefetch support that already exist for ...
    Pulkitg64 6.9 hours ago:  Thanks @goankur for the heads up.
    goankur 19.1 hours ago:  @Pulkitg64 heads up — #16705 changes KnnVectorValuesprefetch so that prefetch(int ord, int count) ... That touches OffHeapFloat16VectorValues, RescoreTopNQuery, FullPrecisionFloatVectorSimilarityValuesS ... Whichever lands second will need a small rebase.

#16687 PR: Use quantized vectors for fp16 HNSW graph merging
6.9 hours ago  2 comments  0 votes  0 watches  Pulkitg64, github-actions[bot], kaivalnp, rohit211-s
Description Scalar quantization support for FLOAT16 vectors was recently added in 16473. During merging of FLOAT32 vectors, the quantized version is used to build HNSW graphs. Fixing the FLOAT16 path to be consistent with FLOAT32, instead of using the input vectors during ...
    rohit211-s 8.4 hours ago:  LGTM!

#16705 PR: Prefetch full-precision vectors when rescoring
8.8 hours ago  13 comments  0 votes  0 watches  github-actions[bot], goankur, jimczi, navneet1v
Prefetch full-precision vectors when rescoring Fixes the case where a BBQ/scalar-quantized ... Follow-up to the discussion in 16656, which this replaces. Thanks @jimczi for the review that redirected it onto the existing IndexInputprefetch hook.
    jimczi 8.8 hours ago:  A few more places where prefetch silently does nothing: - OffHeapFloat16VectorValues has no ... So ScalarQuantizedFloat16VectorValues now forwards into a no-op and the fp16 rescore stays as it ... Maybe worth a test that checks each wrapper forwards, this keeps coming back.
    jimczi 8.8 hours ago:  The description says the task executor part is orthogonal and comes as a separate PR, but it's ... I'd drop it and keep this single threaded for now. One task per leaf isn't a fair split.

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