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#15934: Explore binary search in ReaderUtil#partitionByLeaf
35.2 minutes ago  2 comments  0 votes  0 watches  gsmiller
DescriptionIn our current implementation, we linearly scan an array of sorted docIDs and compare ... I'm curious if a binary search approach might work better. The idea would be to iterate the leaves in order (which we're already doing) and bsearch the sorted ...
    gsmiller 35.2 minutes ago:  Modified my benchmark and got some results: ` Benchmark ... When leaves greatly outnumber docs (e.g., 200 leaves for 100 docs), the binary search approach ... The linear scan only touches the 100 doc IDs. - In absolute terms, even the largest differences are ...
    gsmiller 2.1 hours ago:  I'm working on a jmh benchmark (#15933) for related reasons. I'll extend it to try this out.

#15933 PR: Add jmh benchmark for ReaderUtil#partitionByLeaf approaches
37.5 minutes ago  0 comments  0 votes  0 watches  github-actions[bot], gsmiller
To support discussion in GH#15905 and an idea captured in GH#15934

#15935: Hook for merge thread pool
46.2 minutes ago  0 comments  0 votes  0 watches  MrFlap, navneet1v, shatejas
Description In opensearch k-NN, we want merge operations to be executed with a dynamic number of ... To do this, we are giving a TaskExecutor a dynamic number of threads here: https://github.com/ ... We would like a close function to be added as an interface with default noop behavior.

#15900 PR: Improve TruncateTokenFilter to truncate on codepoints (and no longer produce half surrogates) or ...
52.2 minutes ago  49 comments  0 votes  0 watches  dweiss, github-actions[bot], mikemccand, msokolov, rmuir, uschindler
fixes #gh-15899
    uschindler 3.1 hours ago:  I rewrote the code according to ICU4J and now looks like this: `java final char[] a = ... It is also easier to understand because it counts down to 0 and only sets the new length is we were ...
    uschindler 3.3 hours ago:  Code is also in icu4j: https://github.com/unicode-org/icu/blob/5edcbb637734e0ef3461262daaca42231dfbf ...

#15905: ReaderUtil.partitionByLeaf API design: ordinal tracking for scatter/gather pattern
3.5 hours ago  1 comments  0 votes  0 watches  gsmiller, zihanx
# Description: Following up on the recently merged ReaderUtil.partitionByLeaf API (https:// ... The doc-values retriever would: - Take an IndexReader, int[] globalDocIds, and DoubleValuesSource[ ... We need ordinal tracking. # Design options: 1.
    gsmiller 3.6 hours ago:  I have a few thoughts but I'm more curious what others think. As a disclaimer I work with Zihan on Amazon's product search, but I'm not particularly close to ... Between the first two options, I think two separate methods is the way to go (option 1).

#15932 PR: build: allow java 26
5.7 hours ago  2 comments  0 votes  0 watches  github-actions[bot], rmuir, uschindler
java 26 has been released, and the gradle version supports it. don't explicitly require java 25 in ...
    rmuir 6.3 hours ago:  Since we aren't using any java 26 features, as far as I can see, everything works as expected ( ... This just allows me to stop deferring that system package upgrade from 25->26 :)

#15926: The build/test tool ProfileResults that aggregates JFRs and prints the hot stacks doesn't work with ...
6.2 hours ago  3 comments  0 votes  0 watches  mikemccand, rmuir
Java 25 added a new CPUTime profiler which uses Linux kernel APIs to sample threads every N CPU ... This eliminates silly ghosts like threads listening forever on a socket. It sounds really cool.
    rmuir 6.2 hours ago:  good find, I think you are correct: we should be able to switch to this new event, and remove the ... I think isInteresting() was born to try to workaround the problem solved here, otherwise the gradle ...
    mikemccand 1.2 days ago:  Also, if CPUTime profiler works well for nightly benchy, we could also switch Lucene's tests ... Is there a tests profiler....? I just assume there is, since we have ProfileResults!

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