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perf: make the native Iceberg writer's dictionary pre-pass 1.8x to 3.9x faster - #6937

Merged

andygrove merged 4 commits into

apache:mainfrom

andygrove:andygrove/issue-6911-selection

Oct 16, 2026

Merged

perf: make the native Iceberg writer's dictionary pre-pass 1.8x to 3.9x faster#6937
andygrove merged 4 commits into
apache:mainfrom
andygrove:andygrove/issue-6911-selection

Commits on Oct 13, 2026
- perf: make the native Iceberg writer's dictionary pre-pass 1.6x to 3.1x faster
  andygrove
  committed
  d851293
- perf: walk flat columns without recursing and simplify the dictionary pre-pass
  andygrove
  committed
  c3e6fc0
Commits on Oct 14, 2026
- test: check the dictionary pre-pass on sliced batches
  andygrove
  committed
  f67eab9
Commits on Oct 15, 2026
- refactor: read plain sizes in the dictionary pre-pass and drop a dead branch
  andygrove
  committed
  c2f688c