* test(callbacks): TEMP diagnostic probe for callback-leak flake
Hardened leak detector (sample N, flag sustained monotonic per-type
growth, normalize instance addresses) + a temporary always-fail probe
on test_check_num_callbacks_on_lowest_latency that dumps the per-type
series and raw reprs via the JUnit failure message, to settle real-leak
vs bounded-pollution on CCI. Diagnostic block is clearly marked and
will be reverted before the PR.
* test(callbacks): harden proxy callback-leak detector, drop diagnostic
CCI diagnostic confirmed the 85->95 jump is a bounded one-time
registration from the test's own switch to latency-based-routing
(+LowestLatencyLoggingHandler, +SlackAlerting), flat at 95 for 2.5 min
under load — not a leak. Final detector: settle past the deliberate
config/update, sample N times, flag only sustained monotonic per-type
growth, normalize instance addresses, name the leaking type on failure.
Removes the temporary always-fail probe.
* test(callbacks): address review - drop redundant settle, close terminal-burst blind spot
- test_check_num_callbacks: remove leftover sleep(30) before sleep(SETTLE_SECONDS) (60s -> 30s dead wait).
- Add _terminal_suspects + _detect_leaks_confirmed: when monotonic net growth is confined to the final interval (escapes the >=2-interval guard), take one confirmation sample. A real ongoing leak keeps climbing and is flagged; a one-time terminal registration plateaus and is ignored.
* fix: use fastuuid helper across the codebase
First batch of changes, simple drop in replacement.
* second batch of changes
* fixed: script mistake on helper file
yuneng-jiang