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perf: improve splitting of the offset vector in `GroupColumn::take_n` implementations, adding a new helper fn - #23730

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mzabaluev wants to merge 16 commits into

apache:mainfrom

mzabaluev:take-n-offsets

Commits on Jul 21, 2026
- feat(common): take_n_offsets helper
  mzabaluev
  committed
  f433995
- bench: GroupValues::emit(First(n)) with bytes
  mzabaluev
  committed
  2729647
- bench: drop emitted groups in emit_first
  mzabaluev
  committed
  56a9d5a
- perf(physical-plan): use take_n_offsets utility
  mzabaluev
  committed
  a1d95a2
- docs: fix up argument name
  mzabaluev
  committed
  3e6eb87
- refactor: safe way to copy out a Vec
  
  mzabaluev
  and
  KonaeAkira
  authored
  16319b8
- chore: remove unused import
  mzabaluev
  committed
  d552beb
- refactor: no need for saturating_mul
  mzabaluev
  committed
  0803c90
- bench(common): split_vec benchmark
  mzabaluev
  committed
  c97e5d1
- bench(common): tune take_n_offsets sample sizes
  mzabaluev
  committed
  440e3a9
Commits on Jul 22, 2026
- bench: rationalize naming, add n == g / 2 + 1 case
  mzabaluev
  committed
  f80450a
- refactor: rewrite unsafe loop
  mzabaluev
  committed
  2b0cc93
Commits on Aug 4, 2026
- Merge branch 'main' into take-n-offsets
  mzabaluev
  committed
  e6895e9
Commits on Aug 10, 2026
- Merge branch 'main' into take-n-offsets
  mzabaluev
  committed
  faa35d0
- chore: post-merge fixes
  mzabaluev
  committed
  0a4a6d0
Commits on Aug 19, 2026
- Merge branch 'main' into take-n-offsets
  mzabaluev
  committed
  a75f1a1