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Phase 4: Parallel hash aggregation - 9-15x faster than DuckDB - #160

Merged

poyrazK merged 16 commits into

mainfrom

perf/group-by-optimization-phase3

Jun 11, 2026

Merged

Phase 4: Parallel hash aggregation - 9-15x faster than DuckDB#160
poyrazK merged 16 commits into
mainfrom
perf/group-by-optimization-phase3

Commits on Jun 9, 2026
Commits on Jun 10, 2026
- Phase 4: Add parallel hash aggregation with ThreadPool
  poyrazK
  committed
  fd364ed
- Fix parallel aggregation: merge thread results at output
  poyrazK
  committed
  b93688c
- Code review cleanup: refactor accumulator update and remove dead code
  poyrazK
  committed
  f74159a
- Add test and warnings for second code review findings
  poyrazK
  committed
  83d237e
- Merge origin/main into perf/group-by-optimization-phase3
  poyrazK
  committed
  d1e209e
- style: automated clang-format fixes
  
  poyrazK
  authored and
  github-actions[bot]
  committed
  fab88e7
- Fix merge issues: add missing classes, fix hash aggregation output
  poyrazK
  committed
  3cf5f03
- style: automated clang-format fixes
  
  poyrazK
  authored and
  github-actions[bot]
  committed
  79934b0
- Fix filter operator and update parallel aggregation test
  poyrazK
  committed
  9ff6da8
- Document DirectIndexAgg limitations and clarify parallel aggregation scope
  poyrazK
  committed
  ae1a5f5
- Update documentation with parallel hash aggregation results
  poyrazK
  committed
  1e18386
Commits on Jun 11, 2026
- Fix 4 bugs in vectorized aggregation operators
  poyrazK
  committed
  b0fe151
- style: automated clang-format fixes
  
  poyrazK
  authored and
  github-actions[bot]
  committed
  c3a190a