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perf: buffer the NestedLoopJoin build side as coalesced chunks instead of one concat_batches allocation - #24820

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ranflarion wants to merge 5 commits into

apache:mainfrom

ranflarion:nlj-chunked-build

Commits on Aug 31, 2026
- buffer the NestedLoopJoin build side as coalesced chunks instead of one concat_batches allocation
  ranflarion
  committed
  0e2df27
Commits on Sep 9, 2026
- test the NestedLoopJoin probe and unmatched-left emission across build chunk boundaries
  ranflarion
  committed
  a5bbd22
Commits on Sep 11, 2026
- Flush the partial chunk when the build side spills and write the rest at input granularity, coalesce each replay pass, and move chunk range clamping into JoinLeftData::range
  ranflarion
  committed
  cc8badf
Commits on Sep 14, 2026
- Merge origin/main and move build-side chunk coalescing into the fallback coordinator's chunk loader
  ranflarion
  committed
  a886459
Commits on Sep 15, 2026
- Compact the build side only after it is fully reserved and keep spilled and replayed batches as they arrived so the memory-limited path never copies a pass
  ranflarion
  committed
  1659313