perf(cubestore): worker-side group-by-limit hash-aggregate trim#11144

Open

waralexrom wants to merge 16 commits into

cubestore-query-performance

Commits on Jun 22, 2026

feat(cubestore): port group-by-limit partial aggregate (renamed from topk), wip behind flag
waralexrom
committed
feat(cubestore): engage group-by-limit trim at distributed execution via worker_sort_and_limit
waralexrom
committed
feat(cubestore): extend group-by-limit pushdown to bare LIMIT and through UNION
waralexrom
committed
feat(cubestore): parallel hash-final worker top-k (experimental, flag-gated)
waralexrom
committed
feat(cubestore): per-partition N-way top-k aggregate (experimental, flag-gated)
waralexrom
committed
refactor(cubestore): drop sorted worker top-k, hash-final is the only path
waralexrom
committed
chore(cubestore): default group-by-limit trim off (opt-in via env)
waralexrom
committed
refactor(cubestore): address PR review on group-by-limit
waralexrom
committed
test(cubestore): ignore worker_sort_and_limit_cluster (worker limit-pushdown Sort not emitted)
waralexrom
committed
fix(cubestore): restore worker-side sort bounding for the inline limit path
waralexrom
committed
perf(cubestore): coalesce partitions under hash aggregate instead of sort-merge
waralexrom
committed
fix(cubestore): correct GroupByLimitAggregateExec partitioning and skip global aggregates
waralexrom
committed