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orca/cloud/apps/relay
Jinwoo Hong 4101505b6b fix(cloud): recalibrate the relay monitor's exhausted-retry freeze to a measured bar (#18569)
* fix(cloud): recalibrate the relay monitor's exhausted-retry freeze to a measured bar

The pre-drain dry-run froze at minute one on relayPostgresRetryExhausted: 0
in every run since #18521 reached the director, blocking the cell roll that
carries the same fix. #18521 made contended request-path waiters fail fast
(500 ms) instead of succeeding slowly, so exhaustion is now a steady
contention rate: 236/236 five-minute windows non-zero over 23 h; post-#18521
p50 42 / p90 147 / max 220 fleet-wide; the 2026-08-23 incident peaked at 467.
300 clears every measured healthy window and stays under the incident shape.
/v1/assign 503 share was unchanged by #18521 (13.9% vs 12.3%).

* test(cloud): pin the exhausted-retry freeze boundary at exactly 300

* docs(cloud): reword relay comments that still described the zero exhausted-retry bar
2026-09-04 00:20:28 -04:00
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