Pratik Mankawde a8ca3d50c3 fix(telemetry): node-health detail panels + OTelCollector hook deadlock ...

- node-health.json: repoint the two "All Jobs" detail panels from the
  __name__ regex over old xrpld_<job>_milliseconds_bucket names to the
  native xrpld_job_running/queued_duration_us_bucket histograms, grouping
  by the job_type label and legending on {{job_type}}.
- OTelCollector::callHooks: copy the hook list under mutex_ and invoke
  handlers outside the lock. A handler can drop the last reference to an
  OTelHookImpl, whose destructor calls removeHook() and re-acquires the
  non-recursive mutex_ — invoking handlers under the lock could deadlock.
- ~OTelGaugeImpl: document that the SDK ObservableRegistry serializes
  RemoveCallback against the Observe() callback pass with one mutex, so
  callback removal is synchronous and gaugeCallback cannot run on a
  dangling pointer after the destructor.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-07-07 19:15:11 +01:00

..

telemetry

fix(telemetry): node-health detail panels + OTelCollector hook deadlock

2026-07-07 19:15:11 +01:00