FA-45148 / Data systems / Member archive

List concatenation rebases child offsets by parent-row count · case 03

List concatenation rebases child offsets by parent-row count.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

Concatenate offset-based list batches into one compact child buffer. Rebase every row offset, copy only each batch referenced child span, preserve parent validity, and preserve child nulls. Output [offsets,visible-child,parent-validity].

Why this case matters

A bounded deterministic data engine model makes representation and changelog faults reproducible.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
two batches	`[[0, 2, 2], [3, 4, 5], [true, true]]`	`[[0, 2, 3], [3, 4, 5], [true, true]]`	Failed

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