FA-99300 / Distributed training aggregation / Member archive
Retransmitted replica updates contribute more than once · case 05
Retransmitted replica updates contribute more than once.
Case contract
Rows [step,worker,value], target step; last row for each worker at that step wins, then values sum.
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 |
|---|---|---|---|
| retry replaces | 30 | 25 | Failed |
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