rjgoyln opened a new pull request, #70840:
URL: https://github.com/apache/airflow/pull/70840
## Summary
Airflow hardcoded `TraceContextTextMapPropagator()` at every trace context
boundary instead
of using the globally configured propagators, making `OTEL_PROPAGATORS`
ineffective inside
Airflow. This caused vendor propagators to be ignored and `Baggage` to be
dropped across
Dag runs, tasks, and worker communication. This switches all propagation to
`opentelemetry.propagate`, matching the Execution API middleware.
## Changes
- Replaced all hardcoded `TraceContextTextMapPropagator()` usages with
`propagate.inject` / `propagate.extract`.
- Stopped filtering run-conf carriers to only `traceparent` / `tracestate`,
allowing
configured propagators to read their own keys.
- Added documentation for `OTEL_PROPAGATORS` and context propagation.
- Updated tests to verify baggage round-tripping and backward compatibility.
- Added newsfragment: `airflow-core/newsfragments/70388.improvement.rst`.
## Compatibility
With the default `OTEL_PROPAGATORS=tracecontext,baggage`, carriers remain
byte-identical
unless baggage is present. Existing carriers continue to extract correctly.
## Scope
Addresses **Issue 2** of #70388 only. Issues 1 and 3 remain separate.
* Related: #70388
-->
---
##### Was generative AI tooling used to co-author this PR?
<!--
If generative AI tooling has been used in the process of authoring this PR,
please
change below checkbox to `[X]` followed by the name of the tool, uncomment
the "Generated-by".
-->
- [X] Yes (please specify the tool below)
Generated-by: Claude Code (Opus 5)
<!--
Generated-by: [Tool Name] following [the
guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#gen-ai-assisted-contributions)
-->
---
* Read the **[Pull Request
Guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#pull-request-guidelines)**
for more information. Note: commit author/co-author name and email in commits
become permanently public when merged.
* For fundamental code changes, an Airflow Improvement Proposal
([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvement+Proposals))
is needed.
* When adding dependency, check compliance with the [ASF 3rd Party License
Policy](https://www.apache.org/legal/resolved.html#category-x).
* For significant user-facing changes create newsfragment:
`{pr_number}.significant.rst`, in
[airflow-core/newsfragments](https://github.com/apache/airflow/tree/main/airflow-core/newsfragments).
You can add this file in a follow-up commit after the PR is created so you
know the PR number.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
