FA-11152 / Streaming segment lifecycle / Member archive
Partial segment replacement · case 02
A retried part is appended as a duplicate part rather than updating its stored payload.
Case contract
Parts are sorted unique [part index,payload]. Replace one completed part or insert a new part, preserving sorted unique indexes.
Why this case matters
A deterministic local media controller stage; metadata and downloaded data are supplied explicitly. No external player, service or codec is required.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| fixture 1 | [[0, "a"], [1, "old"], [1, "new"]] | [[0, "a"], [1, "new"]] | Failed |
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