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#16972 PR: LFV-663: Fix Brazilian "logias" stem replacement
47 minutes ago  4 comments  0 votes  0 watches  github-actions[bot], shbhar, sjs004
Description Brazilian stemmer for logias isn't working because the result is not assigned back ... This PR fixes that and adds relevant tests for the same Resolves LFV-663 of parent issue https:// ...
    shbhar 47 minutes ago:  According to AI this bug has evaded detection for over 22 years (since version 1.9)! :O https://shbhar.github.io/lucene-ai-bug-hunt/?q=LFV-663
    shbhar 9.5 hours ago:  oof, just a minor typo!

#16889 PR: ConcurrentMergeScheduler can spawn more merge threads than maxMergeCount
1.9 hours ago  3 comments  0 votes  0 watches  github-actions[bot], goingforstudying-ctrl, vsop-479
DescriptionI was looking at #13593 and the race aoli-al described is still there in main: ... So a merge can become pending right between the stall check and getNextMerge(), and merge() happily ... This makes the cap airtight in two spots: - A merge thread asked to schedule more work while we're ...
    vsop-479 1.9 hours ago:  Sorry I was not clear. I meant we can fix this just in maybeStall() and remove the change in merge(): ` while ( ... return false; } if (mergeSource.hasPendingMerges() == false) { // // Individual comment. ...
    goingforstudying-ctrl 3.8 days ago:  Done in 6c281d1. maybeStall now returns false for a merge thread when no merges are pending, so it ... The cap re-check in merge() still covers producer threads, and the registration path triggers a ...

#16901 PR: Add unit tests for NeighborArray#addAndEnsureDiversity
2.1 hours ago  0 comments  0 votes  0 watches  github-actions[bot], leng25
NeighborArrayaddAndEnsureDiversity is currently only tested indirectly through HnswGraphTestCase. This PR adds direct unit tests in TestNeighborArray Tests use a small 2D scorer (similarity = 1 − ...

#16976 PR: Reuse per-level candidate arrays across insertions
2.5 hours ago  0 comments  0 votes  0 watches  github-actions[bot], shubhamvishu
Description Worked with AI (with human in the loop :) ) to find this nice optimization idea(s) ... addGraphNodeInternal allocated a new NeighborArray per level per inserted node; it starts at 1/8 of ... Each builder now keeps one array per level (starts the same way with 1/8th but after its full its ...

#16977 PR: Use FixedBitSet more aggressively only on the query side for visited nodes
2.5 hours ago  0 comments  0 votes  0 watches  github-actions[bot], goankur, shubhamvishu
Description Worked with AI, with a human in the loop. In 16806, we proposed changing the graph builders visited set from a FixedBitSet to an IntHashSet ... Queries don't have this same problem: a query clears its visited set only twice (once for the ...

#16979 PR: Overlap cache misses when bulk scoring quantized vectors
2.5 hours ago  0 comments  0 votes  0 watches  github-actions[bot], shubhamvishu
Description [Draft PR] Worked with AI, with a human in the loop. HNSW scoring of quantized vectors waits on memory: each target record is loaded only when it is ... Touch every cache line of the batch first, through MemorySegmentAccessInput, so the misses overlap.

#16805 PR: Collector manager join
4 hours ago  32 comments  0 votes  0 watches  github-actions[bot], javanna, mkhludnev, msokolov
I took another stab at cutting over the usage in the join package from Collector to CollectorManager ... It seems to pass all the tests, but I don't have a high degree of confidence - the testing in this ... I wonder if anyone who uses this stuff could try this out and give some idea of performance impact? ...
    msokolov 4 hours ago:  I added a test to reproduce the concurrency bug I saw so we can have some multithreaded coverage of ...
    msokolov 4 hours ago:  with this change I got these benchmark results: # BEFORE main (16 searcher threads) ` -------- ... Anyway no regression

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