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#16446 PR: MultiFieldQueryParser: default operator is not honored between term positions (#16443)
1.8 hours ago  39 comments  0 votes  0 watches  Copilot, HoustonPutman, OlivierJaquemet, copilot-pull-request-reviewer[bot], epotyom, github-actions[bot], mkhludnev, msokolov
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 1.8 hours ago:  Hi @HoustonPutman, I saw on the dev mailing list that you're working on the 10.6 release. Would you be open to including this MR in it? P.S.
    OlivierJaquemet 8.6 days ago:  @msokolov If you do not consider a backport in 10.5.x, could it be included in the 10.6.0 milestone ... https://github.com/apache/lucene/milestone/37

#16725: Complete FP16 (float16) vector support across Lucene
2 hours ago  3 comments  0 votes  0 watches  Pulkitg64, kaivalnp, rcpeken
Description We have been adding FP16 support at various places in Lucene. Listing them below: * Add fp16 (float16) vector encoding support, no quantization support: 16383* ... This is an overview issue which tracks all the task where we need to add the support.
    rcpeken 16 days ago:  Opened 16735 for the Float16VectorSimilarityQuery item. It mirrors FloatVectorSimilarityQuery on top of the fp16 APIs from 16383. One note: I only added the Adaptive variant, since Explicit is deprecated in the float/byte queries ...
    kaivalnp 16.2 days ago:  Thanks @rcpeken, please feel free to open a PR for Float16VectorSimilarityQuery -- I don't think it ...

#16839 PR: Compute merged OSQ centroid during the raw vector merge
2.4 hours ago  0 comments  0 votes  0 watches  dengfengjiang77, github-actions[bot], kaivalnp, mikemccand, msokolov
Relates to 16674, thanks @kaivalnp for this idea. Currently the scalar quantized writer re-read every raw vector to recompute the merged centroid ... The proposal is to compute the merged centroid while the raw vectors are copied in step 1 and use ...

#16398: PR benchmark bot for Lucene?
3.5 hours ago  2 comments  0 votes  0 watches  owaiskazi19, rajat315315, sgup432, stefanvodita
Description While working on performance optimization features in lucene, I see we usually end up ... And regressions are often only caught later during nightlies. I was wondering if we could provide a way for users to trigger lightweight benchmarks directly from ...
    owaiskazi19 3.6 hours ago:   Hi, I'd be interested in picking this up. OpenSearch already has something very close to what's described here, so it might be a useful ... On an OpenSearch PR you comment something like {"run-benchmark-test": "id_5"}.
    rajat315315 2.7 months ago:  I would suggest we should also show code-coverage percent in each PR.

#16838 PR: validate file names from primary node in ReplicaNode.getFilesToCopy
3.6 hours ago  0 comments  0 votes  0 watches  github-actions[bot], soma0212
REVIEWER NOTE (for Soma, not part of the PR body): Lucene's AI_POLICY.md requires the PR ... Review the patch, make sure you understand and can explain it, then write the PR body yourself; the ... Also replace GITHUB#XXXXX in the lucene/CHANGES.txt entry with the real PR number before pushing ( ...

#16771 PR: Page-align vector data for all encodings
4.6 hours ago  17 comments  0 votes  0 watches  CH-Abhinav, Pulkitg64, github-actions[bot], goankur, gsmiller, kaivalnp, uschindler
**(Implemented using AI with human in the loop)** Description Fast-follow to 16705. Rescoring with full-precision vectors reads one whole vector per candidate. A 1024-dim float32 vector is exactly 4096 bytes, but Lucene99FlatVectorsWriter aligns the vector ...
    CH-Abhinav 4.6 hours ago:  Maybe we can dynamically calculate page size of a given platform and align based on that ? won't hardware which is less that 4KiB will see performance degrade from what is optimal. I am not sure but I think this alignment works for all hardware's .
    uschindler 5 hours ago:  > And Java 27 has compact object headers. Reduced headers cause problems with alignment as I can see especially in Arrays since those are ... I am just assuming it so someone check it out.

#16794 PR: Speed up concurrent HNSW merges by joining the smaller graphs
6.3 hours ago  39 comments  0 votes  0 watches  LantaoJin, Pulkitg64, benwtrent, github-actions[bot], kaivalnp, mayya-sharipova, msokolov
Description ConcurrentHnswMerger never uses the join-set merge from 14331. It initializes the merged graph from the largest input graph and then inserts every other vector ... Only the serial MergingHnswGraphBuilder joins them.
    mayya-sharipova 6.3 hours ago:  @LantaoJin Thanks for addressing my comments. I agree we can drop this TODO. --- I think this PR is ready to be merged to main and 10x ...
    LantaoJin 15.2 hours ago:  fixed

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