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#15903 PR: Add TurboQuant rotation-based vector quantization codec to sandbox
2.8 minutes ago  29 comments  0 votes  0 watches  benwtrent, github-actions[bot], mccullocht, mikemccand, shbhar, tveasey, xande
# Summary This PR adds a new FlatVectorsFormat implementation based on the TurboQuant algorithm ... This implementation was co-authored with an AI coding agent (Kiro) as an experiment in AI-assisted ... The agent handled the bulk of the code generation, test writing, and iterative debugging while I ...
    mccullocht 2.8 minutes ago:  > Do you mean add rotation inside existing OSQ and still keep optimizeIntervals + 14 byte ... Yes. Theoretically you could implement this as a generic wrapper codec that rotates at write and read ...
    shbhar 7.3 minutes ago:   >Add a datablind scalar quantized flat vectors format that is OSQ based. I took a stab at this in the existing SQ format and it's quite tricky so we may want it to be a ... Makes sense, I guess with this we can also give the option to user to not store fp32 vectors at all ...

#15935: Hook for merge thread pool
4.9 hours ago  1 comments  0 votes  0 watches  MrFlap, benwtrent, navneet1v, shatejas
Description In opensearch k-NN, we want merge operations to be executed with a dynamic number of ... To do this, we are giving a TaskExecutor a dynamic number of threads here: https://github.com/ ... We would like a close function to be added as an interface with default noop behavior.
    benwtrent 4.9 hours ago:  Why isn't finish() used? A new interface extension seems unnecessary.

#15952 PR: Add afterMerge() lifecycle hook to KnnVectorsWriter and PerFieldKnnVe…
4.9 hours ago  3 comments  0 votes  0 watches  MrFlap, benwtrent, github-actions[bot], navneet1v, shatejas
Resolves https://github.com/apache/lucene/issues/15935 Problem PerFieldKnnVectorsFormat ... This makes it impossible to cleanly release per-merge resources, leading to resource leaks. Solution Add a protected void afterMerge() throws IOException method with a no-op default to both ...
    benwtrent 4.9 hours ago:  Why doesn't finish work? It seems like the writer should know its in a merge context already and finish should just handle ... Adding a new interface seems unnecessary?
    navneet1v 1.7 days ago:  @MrFlap can you add entry in change log and also unit test for the new interface

#15565 PR: Introduce AllGroupHeadsCollectorManager
7.2 hours ago  2 comments  0 votes  0 watches  gaobinlong, github-actions[bot], javanna
Description AllGroupHeadsCollectorManager in grouping package did not have until now a ... Relates to https://github.com/apache/lucene/issues/12892.
    javanna 7.2 hours ago:  Thanks for opening this PR @gaobinlong ! I had a quick look and my observations are similar to those I had at https://github.com/apache/ ... We are introducing a new public collector manager that is only used in tests code, while the ...
    github-actions[bot] 2.5 months 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!

#15953 PR: Add api/runtime Usage attribute to modular configurations.
9.5 hours ago  0 comments  0 votes  0 watches  dweiss, github-actions[bot]
The custom modular paths extension we use resolves modules properly unless they use gradle's module ... Compile-time/ runtime dependencies may be omitted incorrectly. This corrects the problem.

#15558 PR: Refactor QueryCache to improve performance
12.9 hours ago  20 comments  0 votes  0 watches  BaurzhanSakhariev, benwtrent, github-actions[bot], mergify[bot], msfroh, sgup432
Description Related issue - https://github.com/apache/lucene/issues/14222 Major changes: ... With each partition having its own read/write lock to improve concurrency.
    msfroh 3.1 days ago:  IMO, this change is pretty good as implemented. While I'm slightly nervous about the implications of modifying the query cache implementation, I ... For those of us who do want a query cache, I think this one should perform much better in ...
    github-actions[bot] 4.7 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!

#15947 PR: Optimize GroupFacetCollector.getFacetEntries()
1.7 days ago  1 comments  0 votes  0 watches  dweiss, gaobinlong, github-actions[bot]
Description The method GroupFacetCollector.getFacetEntries() can be optimized by: 1) Initial ...
    dweiss 1.9 days ago:  In all honesty, I think the previous version was easier to understand and the gain is probably ...

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