[kamikazeayoup]

Problem

The Jaeger propagation format (https://www.jaegertracing.io/sdk-migration/#tracespan-identity) defines flags as one or two hexadecimal digits, but the propagator parses them as decimal.

Valid values such as b (sampled, debug, and firehose enabled) fail to parse, causing the incoming trace context to be lost.

Changes

• Parse flags using base 16.
• Add a regression test using the Jaeger client’s encoder to verify that flags b produce a valid, sampled remote context.

Validation

The regression test fails without the fix and passes with it.

[opentelemetry-pr-dashboard]

Pull request dashboard status

Merged · refreshed 2026-10-29 21:54 UTC

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.36%. Comparing base (877820b) to head (5156a79).
⚠️ Report is 9 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #8975      +/-   ##
============================================
- Coverage     90.41%   90.36%   -0.06%     
- Complexity    10981    10992      +11     
============================================
  Files          1019     1020       +1     
  Lines         30016    30083      +67     
  Branches       3917     3931      +14     
============================================
+ Hits          27140    27183      +43     
- Misses         1923     1939      +16     
- Partials        953      961       +8     

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[jack-berg]

Nice find, thanks for fixing. Pushed a small commit to add a few more test cases.

[otelbot]

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