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#15608 PR: TopFieldCollectorManager: Support thread safe
43.5 minutes ago  3 comments  0 votes  0 watches  github-actions[bot], prudhvigodithi
Description TopFieldCollectorManager: Support thread safe, resolves https://github.com/apache/ ... ~**Note: Will add some tests and open for discussion to continue support getCollectors()**~
    github-actions[bot] 17.8 hours 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!
    prudhvigodithi 19 days ago:  I was able to repro the issue with this test, this test fails when used this.collectors = new ...

#15620 PR: Add Temporal Merge Policy for time-series data
1.2 hours ago  44 comments  0 votes  0 watches  benwtrent, churromorales, github-actions[bot], msfroh, shubhamsrkdev
Description This PR introduces TemporalMergePolicy, a new merge policy designed for time-series ... The policy groups segments into time windows and merges segments within the same window, but never ... This preserves temporal locality and improves query performance for time-range queries. relates to ...
    msfroh 1.2 hours ago:  Hey -- sorry for the delay, @churromorales. I'll give this one last check this afternoon, then I'll go ahead and merge it if no other ...
    github-actions[bot] 17.8 hours 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!

#15805 PR: Remove lock in StringHelper, using atomic getAndUpdate instead
2.1 hours ago  8 comments  0 votes  0 watches  easyice, github-actions[bot], msfroh, neoremind, rmuir, sgup432
Description This should reduce lock contention in StringHelper.randomId() by replacing with ... We also move the toByteArray() call out of the lock/concurrent update as suggested by @easyice in ... As a bonus, we clean up one more instance of a non-final static field by replacing it with a final ...
    neoremind 2.1 hours ago:  I think async-profiler or JFR yielding flamegraph can reflect what's real, not sure other old and/ ... One follow-up question: I notice there are quite amount of "synchronized" footprint in the codebase ... Or it's more case by case?
    rmuir 3.2 hours ago:  > In addition, out of curiosity, to learn more, what tools are you referring to? making synchronized looks like a bottleneck though it might not be? and Lucene has to compromise and adapt?

#15732 PR: Prevent writing vectors twice during merging HNSW graphs
3.5 hours ago  25 comments  0 votes  0 watches  benwtrent, github-actions[bot], iverase, mccullocht, msokolov
This PR is just addressing the following suggestion from Adrien when merging https://github.com/ ... This version only supports un-quantised vectors because for quantise vectors the logic is a bit ... The key aspects of this implementation are: 1.- KnnVectorsWritermergeOneField returns now an ...
    iverase 3.5 hours ago:  This is migrated from here: https://github.com/apache/lucene/blob/e835af7b2075dc4c5d54fd0c0b063c7247 ... We divide by 8 to compute the number of bytes and we multiply by the QUERY_BITS (4x) as defined in ...
    iverase 3.7 hours ago:  Sure, we can just remove the casting.

#15812: CJKBigramFilter produces inconsistent token positions with outputUnigrams enabled vs disabled
4.5 hours ago  1 comments  0 votes  0 watches  amatoba, rmuir
Description CJKBigramFilter produces different token positions for the same input depending on ... This causes phrase query mismatches when index-time and search-time analyzers use different ... Steps to reproduce Using the _analyze API (tested on ES 9.3.1 / Lucene 10.2.1): **With ...
    rmuir 4.5 hours ago:  I agree with your analysis. Although the logic to this thing is hairy, we should try to make the positions "line up" across ... e.g. outputUnigrams=false should behave as if we emitted the unigrams, then later removed them.

#15819 PR: Fix SpanOrQuery scores each document using the combined IDF of all causes
10.3 hours ago  0 comments  0 votes  0 watches  gaobinlong, github-actions[bot]
Description Resolves https://github.com/apache/lucene/issues/13796. Fix SpanOrQuery scores each document not using only the IDF of the term that matched, but the ... With two docs (foo:bar, foo:baz) and a spanOr([foo:bar, foo:baz]) query, each doc should score the ...

#15818 PR: Add BM25 k3 query-term frequency saturation to classic query parser
15.2 hours ago  0 comments  0 votes  0 watches  github-actions[bot], sgup432
Description Related issue - https://github.com/apache/lucene/issues/15768 Adds BM25 k3 ... Duplicate terms in a query string now get their boost computed as ((k3+1)*qtf)/(k3+qtf) instead of ... Defaults to -1 (disabled) — fully backward compatible.

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