fix-otel-thread-context-correctness-0fb65fa39ac88d25.yaml

---
fixes:
  - |
    tracing: Fixes an issue where the OpenTelemetry thread context reported no active
    trace whenever a trace was propagated without a local span, so compatible profiling
    and security tools could not correlate samples taken in executor worker threads, or
    on a distributed request before its first span started.
  - |
    tracing: Fixes an issue where the OpenTelemetry thread context kept reporting a trace
    as unsampled for the whole life of the trace, because trace sampling usually decides
    after the record is published. The record is now updated when the sampling decision
    is made.
  - |
    tracing: Fixes an issue where publishing the OpenTelemetry thread context on an
    asynchronous context switch could change which span is active in that context, and
    publish the record twice for a single switch.