fix(configuration): remove default propagator initialization#6399
Merged
maryliag merged 2 commits intoopen-telemetry:mainfrom Feb 12, 2026
Merged
fix(configuration): remove default propagator initialization#6399maryliag merged 2 commits intoopen-telemetry:mainfrom
maryliag merged 2 commits intoopen-telemetry:mainfrom
Conversation
Propagators are no longer implicitly configured with default values (tracecontext, baggage) in initializeDefaultConfiguration(). They must now be explicitly set via environment variables or configuration files to be enabled. Also adds logic to auto-generate composite_list from composite entries when parsing YAML configuration files. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #6399 +/- ##
=======================================
Coverage 95.50% 95.50%
=======================================
Files 365 365
Lines 11609 11611 +2
Branches 2677 2678 +1
=======================================
+ Hits 11087 11089 +2
Misses 522 522
🚀 New features to boost your workflow:
|
MikeGoldsmith
commented
Feb 11, 2026
maryliag
approved these changes
Feb 12, 2026
Contributor
maryliag
left a comment
There was a problem hiding this comment.
Thank for working on this change
4 tasks
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Which problem is this PR solving?
Addresses feedback from stale PR #6234
The
initializeDefaultConfiguration()function was implicitly configuring propagators with default values (tracecontext, baggage), which violated the OpenTelemetry specification that propagators should NOT be set by default unless explicitly configured.Short description of the changes
This PR removes the default propagator initialization and ensures propagators are only set when explicitly configured via:
OTEL_PROPAGATORS)Type of change
How Has This Been Tested?
@opentelemetry/configurationshould not set propagators by defaultverifies propagators are not implicitly configuredcomposite_listfromcompositeentriesThe 5 pre-existing test failures are unrelated to this change (they involve
temporality_preferenceexpectations).Checklist:
Note: This supersedes the stale PR #6234 and incorporates reviewer feedback from @maryliag:
ConfigFactory.test.ts(notutils.test.ts)