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#15574 PR: Introduce FirstPassGroupingCollectorManager
52.2 minutes ago  10 comments  0 votes  0 watches  dweiss, gaobinlong, github-actions[bot], javanna
Description This pr introduces FirstPassGroupingCollectorManager and switches TestGrouping and ... Relates to https://github.com/apache/lucene/issues/12892.
    javanna 52.2 minutes ago:  Thanks @gaobinlong , I left some comments!
    javanna 52.4 minutes ago:  can usages like these also be replaced? Hopefully we will do a search in the test using the collector retrieved via the collector manager? Can we do the search providing the collector manager instead?

#15557 PR: Introduce AllGroupsCollectorManager
1.1 hours ago  10 comments  0 votes  0 watches  dweiss, gaobinlong, github-actions[bot], javanna, jpountz, romseygeek
Description AllGroupsCollector in grouping package did not have until now a corresponding ... Relates to https://github.com/apache/lucene/issues/12892.
    javanna 1.1 hours ago:  Thanks for the update @gaobinlong . I had another look and left a couple more comments. I will merge this PR once those are addressed.
    javanna 1.1 hours ago:  can the groups ever be null? I believe it is initialized with each AllGroupsCollector instance, hence there is no need to check ... Does that make sense?

#15868 PR: Optimise DisjunctionMaxBulkScorer
1.4 days ago  5 comments  0 votes  0 watches  github-actions[bot], iprithv, jpountz, uschindler
Description: Made two optimisations here: **1. Reuse inner LeafCollector** : The anonymous LeafCollector was allocated inside the inner do-while ... Moved to a reusable field (innerCollector), eliminating per-window allocations and GC pressure.
    iprithv 1.4 days ago:  Hi @jpountz @uschindler, just a quick nudge on this one.
    iprithv 10.8 days ago:  sure thanks @uschindler, @jpountz, could you please help review this? Thanks!

#15861 PR: Optimise phrasescorer matches
1.4 days ago  5 comments  0 votes  0 watches  github-actions[bot], iprithv, romseygeek
# Description Optimise **PhraseScorer** in **ScoreMode.TOP_SCORES** by short-circuiting ... . # Behaviour In **PhraseScorer.TwoPhaseIterator.matches()**: 1.
    romseygeek 3.2 days ago:  Thanks @iprithv, this looks great! I left a couple of comments.
    romseygeek 3.2 days ago:  Can we add benchmarks to check that there isn't an adverse impact on COMPLETE and COMPLETE_NO_SCORES ...

#15968: Generalize jmh-table.py into a reusable visualization for any JMH benchmark
1.9 days ago  0 comments  0 votes  0 watches  gsmiller, mikemccand, neoremind
Description Spinoff from 15950 as @mikemccand suggested. The jmh-table.py visualization introduced in this PR for ScoreDoc sort benchmark is really cool, ... One enhancement is: the script currently hardcodes size and distribution which ties specifically to ...

#15950 PR: Add JMH benchmark comparing various sort algorithms specifically for sorting ScoreDoc[] of varying ...
2.9 days ago  16 comments  0 votes  0 watches  gsmiller, mikemccand, neoremind, zihanx
[Spinoff from @zihanx's recent PR (15803) adding ReaderUtil.partitionByLeaf helper to collate any ... TL;DR: see this cool benchmark results UI testing various algorithms to sort ScoreDoc[] (smaller is ... The hits from a Lucene query (ScoreDoc[]) come out sorted by something important to the user (e.g. ...
    neoremind 2.9 days ago:  Nice work on the benchmark + visualization! One thing I noticed: jmh-table.py currently hardcodes size and distribution as the param dimensions ... If the script is meant to be general-purpose, would it make sense to auto-discover @Param attribute ...
    mikemccand 3.9 days ago:  Ooh good catch, you're right -- Lucene hits would never duplicate docid.

#15967: The InfoStream progress lines from concurrent HNSW merging report duplicate times
3 days ago  1 comments  0 votes  0 watches  mikemccand
I'm digging into nightly benchy and concurrent HNSW merging, trying to extend segment traces to ... InfoStream has these useful lines: ` HNSW 0 [2026-04-15T14:58:00.633261871Z; hnsw-merge-1-thread- ... Here's the source: ` private long printGraphBuildStatus(int node, long start, long t) { long ...
    mikemccand 3 days ago:  Related: it would be helpful if each work unit (2048 vectors inserted into the graph) InfoStream'd ... Then we could derive the "effective concurrency" by summing all those times that contributed to one ...

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