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#15943: Failing test in TestIndexOptions: estFrozenFieldTypeCacheRestabilizes
17.6 minutes ago  0 comments  0 votes  0 watches  mouhc1ne
Description I ran into this failure during a Lucene build. I can reliably reproduce on main using the reproducer line. Getting rid of the seed and repeating the tests enough times also reliably reproduces the issue, ...

#15903 PR: Add TurboQuant rotation-based vector quantization codec to sandbox
2.1 hours ago  22 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 ...
    shbhar 2.1 hours ago:  Following @mccullocht's advice, had Kiro run centered benchmarks (subtract global mean, ... Also throwing in x86 (r7i.8xlarge) together to make sure there are no arch specific discrepancies ...
    mccullocht 22.6 hours ago:  > TQ-1bit, as implemented in my poc branch, only stores quantized data which is 539 MB total (30x ... Today there's no way to opt out of float32 storage in Lucene's quantized formats (What are the ... I assume because it needs to keep float32 vectors around for requantization during segment merges?) ...

#15939 PR: remove explicit determinization from RegexpQuery
5.6 hours ago  2 comments  0 votes  0 watches  drempapis, github-actions[bot], rmuir
for RegexpQuery only, remove explicit determinization. If your regular expression happens to be a DFA already, then you get a DFA execution. Otherwise if it is NFA, you get NFA execution that only compiles as-needed.
    drempapis 5.6 hours ago:  @rmuir, before going further, I wanted to check with you, would you prefer that follow-up work ... Happy to iterate either way, just want to align with how you’d like this to evolve.
    rmuir 18.2 hours ago:  Feel free to toss this PR if anyone wants to iterate elsewhere, I mainly wanted to: * prototype ... e.g. for RegexpQuery, if a user really really wants a DFA for some special purpose, they can still ... .

#15942 PR: Skip max score computation when sorting by relevance in BlockGroupingCollector
6.9 hours ago  2 comments  0 votes  0 watches  benwtrent, gaobinlong, github-actions[bot]
Description In BlockGroupingCollector.getTopGroups(), we firstly compute the groupMaxScore by ... For the groupMaxScore, we can get the maxScore from the top scoreDoc in the merged top docs. For the totalMaxScore, we can get it from the groups[0] directly if sort by relevance.
    benwtrent 6.9 hours ago:  simple enough, I like it
    gaobinlong 8.2 hours ago:  Hi @benwtrent , please help to review this PR when you're convenient, thanks!

#15879 PR: Optimize TopGroups.merge() maxScore computation for relevance sorting
8.6 hours ago  2 comments  0 votes  0 watches  benwtrent, gaobinlong, github-actions[bot]
Description When docSort is Sort.RELEVANCE, derive each group's maxScore directly from ... Also hoist docSort.equals(Sort.RELEVANCE) into a local boolean to avoid repeated equals() calls in ...
    gaobinlong 9.5 days ago:  > Do we have any benchmarks to show the improvement? It seems intuitive to me that there should be nice improvements. Thanks @benwtrent , the current code in the benchmark tool luceneutil doesn't cover the ...
    benwtrent 13.2 days ago:  Do we have any benchmarks to show the improvement? It seems intuitive to me that there should be nice improvements.

#15830 PR: Fix possible lost signal in ControlledRealTimeReopenThread
9.3 hours ago  3 comments  0 votes  0 watches  dweiss, github-actions[bot], viliam-durina
Condition.signal/await was used to wake up the background thread to reload data. Since the background thread isn't owning the condition's lock at all times, notification can be ... Specifically, if a new waiter arrives while doing maybeRefreshBlocking() and before it obtains the ...
    dweiss 9.3 hours ago:  I allowed myself to add an explicit monitor and change the parameters to an explicit Duration. I think it's clearer and the class is experimental so no problem there. Let me know if this is ok.
    dweiss 9.7 hours ago:  I'm not that familiar with this code but this change looks ok. Thanks for tackling the difficult concurrency stuff. I feel tempted to make synchronization explicit (instead of method keyword) consistently.

#15896 PR: Skip heavy TreeSet opts for the first group in SearchGroup#merge
15.7 hours ago  3 comments  0 votes  0 watches  benwtrent, gaobinlong, github-actions[bot], jainankitk
Description Similar to https://github.com/apache/lucene/pull/15128, when merging groups across ... Benchmark test on wikimedium10k: ` TaskQPS baseline StdDevQPS my_modified_version ...
    gaobinlong 15.7 hours ago:  Thanks! @jainankitk
    jainankitk 18.5 hours ago:  Looks fine to me!

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