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#15821 PR: Use List.of() instead of Collections.unmodifiableList(Arrays.asList()) in BooleanQuery
57.4 minutes ago  1 comments  0 votes  0 watches  epotyom, github-actions[bot], sgup432
Description While checking BooleanQuery, I saw in the constructor we wrap the clauses in two ... Which returns a immutable list as well with no wrapper overhead.
    epotyom 57.4 minutes ago:  I might be missing something, but I believe Collections.unmodifiableList(Arrays.asList(clauses)) ...

#14738 PR: feat: add automated backport workflow
1.8 hours ago  24 comments  0 votes  0 watches  ayagmar, github-actions[bot], github-advanced-security[bot], github-project-automation[bot], mikemccand, rmuir, stefanvodita, vigyasharma
Fixes 14496 # Summary This PR adds an automated backport workflow for merged pull requests. The implementation now: - uses a dedicated script file for planning: .github/workflows/backport.sh ... .
    stefanvodita 1.8 hours ago:  Sorry for the wait @ayagmar. I had another look. I'm happy for us to try this if no one objects.
    ayagmar 9.1 days ago:  they're not, nice catch! I trimmed the resolver to Lucene’s branch conventions only: - branch_<major>x - branch_<major ...

#15831: Missing a refresh is possible in ReferenceManager
3.2 hours ago  0 comments  0 votes  0 watches  viliam-durina
Description I think the code of ReferenceManager.maybeRefresh() might miss a refresh. It tries to avoid starting a refresh if another is already in progress. But I think it's racy: 1.

#15830 PR: Fix possible lost signal in ControlledRealTimeReopenThread
3.6 hours ago  0 comments  0 votes  0 watches  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 ...

#15820: Lucene103 blocktree TrieReader regression: 4x slower seekExact for _id lookups vs lucene90 FST
3.9 hours ago  3 comments  0 votes  0 watches  Vikasht34, gf2121, herley-shaori, jainankitk, msfroh, navneet1v, uschindler
Description Component: core/codecs Description: The lucene103 blocktree codec replaced the ... This causes a significant performance regression for workloads that perform high-frequency ... With ~400 segments per index, each document requires ~400 seekExact calls.
    uschindler 3.9 hours ago:  See also for an explanation: https://github.com/apache/lucene/pull/15824#issuecomment-4067946294 ...
    gf2121 10.8 hours ago:  > TrieReader replaces in-memory FST with on-disk trie navigation. The FST was loaded into Java heap at segment open time — navigation was pure CPU (BitTable.isBitSet ... The TrieReader reads from memory-mapped files, adding I/O indirection.

#15805 PR: Remove lock in StringHelper, using atomic getAndUpdate instead
12.5 hours ago  11 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 12.5 hours ago:  @rmuir Thanks for the explanation. I spent some time diving into the profiling caveats you raised, I now have a much better ... And I agree your insight on trusting kernel perf is well stood, and the "profiler ghost" ...
    rmuir 2.9 days ago:  that async profiler is also broken. Look if we want to optimize the concurrency, my recommendation would be to raise the bar on bug ... The decision tree looks like this: 1.

#15827 PR: Add BayesianScoreQuery and LogOddsConjunctionQuery for probabilistic hybrid search
12.5 hours ago  0 comments  0 votes  0 watches  github-actions[bot], jaepil
# Summary Add BayesianScoreQuery and LogOddsConjunctionQuery to Lucene, enabling probabilistic ... Reference implementation: cognica-io/bayesian-bm25 **This PR adds 5 new files and modifies only ... KNN cosine similarities live in [0, 1].

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