.NET: Fixing issue where OpenTelemetry span is never exported in .NET in-process workflow execution - #4196

Merged

Ben Thomas (alliscode) merged 8 commits into

microsoft:mainfrom

alliscode:investigation/issue-4155-1771877003

Feb 25, 2026

Commits on Feb 23, 2026

1. Add reproduction test for issue #4155: workflow.run Activity never stopped in streaming OffThread path

alliscode
and
Copilot
committed
068eb43

Commits on Feb 24, 2026

Add root-level workflow.session activity spanning run loop lifetime\n\nImplements two-level telemetry hierarchy per PR feedback from lokitoth:\n- workflow.session: spans the entire run loop / strea…
alliscode
committed
ae2e9ae
Merge branch 'main' into investigation/issue-4155-1771877003
Ben Thomas (alliscode)
authored
bf80930
Address Copilot review: fix Activity/CTS disposal, rename activity, add error tag\n\n1. LockstepRunEventStream: Remove 'using' from Activity in async iterator\n and manually dispose in finally bl…
alliscode
committed
ae784bf
Review fixes: revert workflow_invoke rename, use 'using' for linkedSource, move SessionStarted earlier\n\n- Revert ActivityNames.WorkflowRun back to \"workflow_invoke\" (OTEL semantic convention co…
alliscode
committed
1bd0a2a
Improve naming and comments in WorkflowRunActivityStopTests"
alliscode
committed
b28dace

Commits on Feb 25, 2026

Prevent session Activity.Current leak in lockstep mode, add nesting test
alliscode
committed
c53e331
Fix stale XML doc: WorkflowRun -> WorkflowInvoke in ObservabilityTests
alliscode
committed
6468ee5