FA-97929 / Dataset split isolation / Member archive
Dataset split: IDs from later partition manifests disappear · case 04
IDs from later partition manifests disappear.
Case contract
Partitions map names to lists of string IDs; return the flattened IDs in partition/input order, with duplicates removed globally.
Why this case matters
This toy split allocator makes membership rules explicit for reproducible evaluation fixtures.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| overlap assigned once | ["a", "b"] | ["a", "b", "c"] | Failed |
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