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#16889 PR: ConcurrentMergeScheduler can spawn more merge threads than maxMergeCount

1.8 hours ago 17 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 maybeStall check the cap unconditionally: the loop now runs whenever mergeThreadCount() ...

goingforstudying-ctrl 1.8 hours ago:	Both done in 95ca6b2. The test now runs the producer on its own thread, asserts it is not stalled at the cap with no ... Still fails on main with maxMergeCount was exceeded: 2.
vsop-479 20.8 hours ago:	It seems the test case and the decription of this change also need to be updated?

#17025 PR: Add FuzzyAutomatonCache to share Levenshtein automata across fuzzy queries

3.6 hours ago 0 comments 0 votes 0 watches anil884, github-actions[bot]

Description FuzzyQuery rebuilds its Levenshtein automata every time it is rewritten. They are shared across the segments of one rewrite, but the same token searched on another field, ... For fuzzy autocomplete over several fields this is a large part of the rewrite cost.

#16780: Explore binary fuse filters to replace bloom filters

4.2 hours ago 9 comments 0 votes 0 watches CH-Abhinav, Utkarsh-rwt, mikemccand

I recently learned about binary fuse filters, which do the same thing as bloom filters ("does the ... ==> maybe or no" at a tunable false-positive (maybe when it was really a no) rate), but more ... The big tradeoff is you cannot incrementally add to the set, i.e. binary fuse filters are not an " ...

CH-Abhinav 4.2 hours ago:	Hey @mikemccand did some changes and lemire(One of the authors of for the binary fuse filter) also ... Can you see the PR once and review it whenever possible. Thanks :)
CH-Abhinav 29.8 days ago:	Hey guys did PR on this issue once check it out and give a feedback if any.

#16691 PR: Optimize DocValues bulk decoding using Panama widening casts (#16677)

4.2 hours ago 11 comments 0 votes 0 watches CH-Abhinav, costin, github-actions[bot], rmuir

Description This PR introduces SIMD bulk decoding for DocValues (8-bit, 16-bit, and 32-bit ... Currently, default scalar loops handle these widening. This PR tries to use Panama Vector API's shape-widening operations (convertShape with ...

CH-Abhinav 2.5 days ago:	Hi @costin saw your previously worked on this files recently. Can you see this PR once and review it whenever your free. It is relatively small PR.
CH-Abhinav 4.3 days ago:	Hi @rmuir it would be great if you can review this PR since you started reviewing it. Suggest changes if any.We can try to integrate this in Lucene 11. Thanks :)

#16843 PR: Adding optimal Binary Fuse Filter to replace Bloom Filter

4.4 hours ago 2 comments 0 votes 0 watches CH-Abhinav, gsmiller, mikemccand

DescriptionCloses 16780. This PR implements native, zero-dependency **Binary Fuse Filters** (Graf & Lemire, 2022) in Lucene, ... Binary Fuse filters are an optimal fit for Apache Lucene because Lucene segments are immutable ...

CH-Abhinav 2.5 days ago:	Hey @mikemccand @gsmiller @iverase can you guys review the PR once whenever your free. Lemire (one of the authors of Binary fuse) also helped a bit regarding this PR. Any suggestions or feedbacks I will fix them.
CH-Abhinav 23.4 days ago:	@mikemccand can you review the PR and suggest feedbacks whenever you have time? I think this will sit perfectly to lucene's architecture since we have immutable segments.

#17026 PR: Clarify in IndexInput and RandomAccessInput Javadocs that IOException/EOFException leaves stream in ...

5.7 hours ago 0 comments 0 votes 0 watches CH-Abhinav, github-actions[bot]

Closes 16951 Description This PR updates the Javadocs for IndexInput and RandomAccessInput to ... **Undetermined state after IOException/EOFException**: - Specified in IndexInput class ... .

#17021 PR: Skip unused window cardinality in DenseConjunctionBulkScorer

17.9 hours ago 3 comments 0 votes 0 watches github-actions[bot], jainankitk, jimczi, romseygeek, uchiha-asha

Skip unused window cardinality in DenseConjunctionBulkScorer when there is no clause left to apply. The benefit is noticeable when loading the window is cheap, e.g. counting the hits of cached ... Benchmarks: new JMH benchmarks (not part of this PR), baseline and patched lucene-core swapped on ...

uchiha-asha 17.9 hours ago:	Thanks @jainankitk for the review. I have updated benchmarks in the description.
jainankitk 23.1 hours ago:	Looks correct to me. I am curious if any benchmark shows the performance improvement

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