FA-98584 / KV cache position mapping / Member archive
Beam cache rows follow selected parent beams · case 04
Child beams inherit cache rows in their previous row order.
Case contract
Return cache rows for each child in the supplied parent_indices order; parent indices may repeat.
Why this case matters
A small in-memory model makes the cache address contract explicit for a serving component.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| swap parents | [["a"], ["b"]] | [["c"], ["a"]] | Failed |
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