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#15742 PR: Optimize int4 vector computations by avoiding conversions
1.1 hours ago  7 comments  0 votes  0 watches  github-actions[bot], kaivalnp, mccullocht
Spinoff from 15736, where @mccullocht identified vector conversions as a potentially slow area ( ... This PR loads and operates on SIMD registers of the preferred bit size to avoid intermediate ... This was sparked from 15697 where we observed a performance drop in JMH benchmarks of some 4-bit ...
    mccullocht 1.1 hours ago:  @kaivalnp the changes in 7ce3c00b3d060e5c5f9b697ad72b88e1f47e185b look like what I did.
    kaivalnp 16.6 hours ago:  Thanks for the benchmarks + fixes for x86 @mccullocht -- please feel free to push to this branch ...

#15608 PR: TopFieldCollectorManager: Support thread safe
1.5 hours ago  2 comments  0 votes  0 watches  github-actions[bot], prudhvigodithi
Description TopFieldCollectorManager: Support thread safe, resolves https://github.com/apache/ ... ~**Note: Will add some tests and open for discussion to continue support getCollectors()**~
    prudhvigodithi 1.5 hours ago:  I was able to repro the issue with this test, this test fails when used this.collectors = new ...

#15605: TopFieldCollectorManager is not thread-safe despite claiming "thread-safe internal states"
1.5 hours ago  9 comments  0 votes  0 watches  benwtrent, gun-pi, prudhvigodithi
Description TopFieldCollectorManager class documentation states that it creates an instance "with ... Collectors field is ArrayList, and it is modified in newCollector() without any synchronisation. So I get ArrayOfBoundException for Collectors field when I call newCollector() concurrently.
    prudhvigodithi 1.5 hours ago:  I havent got any response on draft PR. I have updated the PR read for review https://github.com/apache/lucene/pull/15608/changes adding ...
    prudhvigodithi 28.9 days ago:  I was able to reproduce this locally, the bug is visible when called newCollector() directly from ...

#15727 PR: Fix incorrect handling of missing values in ToParentBlockJoinSortField (#15548)
2.2 hours ago  18 comments  0 votes  0 watches  github-actions[bot], gmarouli, mccullocht, romseygeek
Description **Problem** ToParentBlockJoinSortField did not handle missing values for child ... When a parent had a mix of children with a value and children without, the children without values ... This led to incorrect sort ordering -- the missing children should participate in the comparison ...
    gmarouli 2.2 hours ago:  Thank you for spotting it! It should have been in the loop. Fixed and test added, I added a new one dedicated to nextDoc because of its complexity, but if you ...
    romseygeek 2.2 days ago:  Thanks @gmarouli! I left another comment.

#15667 PR: Use bulk scoring in NeighborArray#isWorstNonDiverse
20.1 hours ago  18 comments  0 votes  0 watches  ML-dev-crypto, benwtrent, github-actions[bot], navneet1v
This change updates NeighborArrayisWorstNonDiverse to use the RandomVectorScorerbulkScore API, ... The bulkScore method is a default interface method and safely falls back to per-node scoring when ... Fixes 15606
    github-actions[bot] 20.1 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!
    ML-dev-crypto 15.3 days ago:  > @ML-dev-crypto do we know what is the impact in performance because of this change? Thanks for the question. Theoretically, this change eliminates array allocations in the hot path of graph construction and ...

#15750 PR: Remove deprecated RegExp complement syntax
23.9 hours ago  1 comments  0 votes  0 watches  getsaurabh02, github-actions[bot], rmuir
# Description Removes deprecated RegExp complement syntax support that was marked for removal in ... . # Changes - Removed DEPRECATED_COMPLEMENT flag (deprecated in Lucene 10) - Removed ...
    rmuir 23.9 hours ago:  Looks good, thank you for the cleanup! I looked to see if we could easily nuke the backing slow operations (minus and complement) from ... Looks like minus() is only used by tests and could be deprecated and subsequently moved to ...

#15752 PR: Add FieldMinMax unified API for global numeric min/max retrieval
1.5 days ago  0 comments  0 votes  0 watches  SYEDMDSAAD, github-actions[bot]
This patch introduces FieldMinMax, a unified API to retrieve global minimum and maximum numeric ... Currently Lucene exposes two different mechanisms: * PointValues.getMinPackedValue / ... FieldMinMax abstracts over both implementations and provides consistent behavior: * Uses ...

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