FA-99333 / Distributed training aggregation / Member archive
Equal-offset shard fragments retain arrival order · case 03
Equal-offset shard fragments retain arrival order.
Case contract
Rows [shard_index,worker_id,values]; sort by both keys and concatenate.
Why this case matters
A toy distributed-training contract makes replica and shard contribution rules explicit without claiming framework compatibility or performance.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| tie arrival reversed | ["b", "a"] | ["a", "b"] | Failed |
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