Concurrent same-key triggers that straddle a runTableV2 flag flip can mint into different physical tables (cuid to TaskRun, ksuid to task_run_v2), whose per-table unique constraints cannot see each other, so neither insert conflicts and two runs share one key. The pre-gate claim now resolves its backend through a claim-only Redis buffer when the mollifier buffer is absent, so it serialises these triggers instead of falling open. v2-cutover orgs are claim-eligible for every idempotency-keyed trigger, including triggerAndWait, debounce, and one-time-use tokens, and the claim-resolved path blocks the parent on the winner's waitpoint.
Dan Sutton
f6410917c6