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Jinwoo Hong
4f839cc8c9
* perf(relay): cut the cell LB drain to 60s and widen the same-cap batch to ten cells Two independent sources of relay roll wall clock, neither of which protects a host: 1. `connection_draining_timeout_sec` on the per-cell backend services was 300s. The same-cap job drains every host off the cell to a restart-safe condition before Terraform runs, so the LB drain only ever covers a host still mid-handshake. Measured 2026-09-16 over ten same-cap cell jobs, it sat as ~5m55s of dead time between `Apply complete` and the old VM powering off, inside an 8.5-minute `wait-until --stable` step. Now 60s, and pinned in the topology `check` block beside the other fixed-one invariants. 2. The same-cap wave capped a batch at four cells, so a 22-cell roll needed six batches, six single-use monitor gates, and a human handoff per batch. The wave workflow now declares cell_1..cell_10 with the identical serial shape and chaining, and the validator accepts two to ten. The shared wave-index rule (`relay-monitor-evidence.mjs` and the relay-ops preflight CLI) widens from 0-3 to 0-9 so the later cells can present the same evidence; each job workflow keeps its own narrower range, so the capacity wave stays at four. Cells remain strictly serial, one at a time behind the rollout lease, each with its own live preflight. Claude-Session: https://claude.ai/session/relay-roll-drain-timeout-and-batch-cap * fix(relay): align the Asia topology plan validator with the 60s cell drain `validate-relay-asia-topology-plan.mjs` rejected any Asia backend whose `connection_draining_timeout_sec` was not 300, and `cloud-deploy-relay-asia-topology.yml` targets `google_compute_backend_service.relay_gce_cell["<cell>"]` per cell. With the Terraform local at 60 that workflow would have failed its own plan review. The validator's two restated topology values are now named exports, and a new census test reads `relay-gce-cells.tf` and equates three statements of each: the `relay_gce_topology` local, the topology `check` assert that pins it, and the validator constant. Terraform cannot export a local to JS, so reading the source is the only way to stop them drifting; the test was confirmed to fail when the local alone is moved back to 300. Repo-wide grep finds no other pin of the drain value. Claude-Session: https://claude.ai/session/relay-roll-drain-timeout-and-batch-cap