open-telemetry / open-telemetry/opentelemetry-java-instrumentation

Auto instrumentation Java Azure function app- Traceid propagation error

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bug
Dominant language
Java
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Description

Describe the bug

Java auto instrumentation for azure function app (both have different service name) calling from parent to child is always

  • creating 2 spans under parent trace id but giving service name parent service

OR

  • or creating 2 parent trace id under 2 different service name
Steps to reproduce

Otel auto instrumentation steps using jar file and tracecontext, baggage otel_propagator

Expected behavior

it should create 1 parent and 2 spans with respective service name

Actual behavior

2 spans for 1 trace and same service name

Javaagent or library instrumentation version

1.38

Environment

JDK:
OS:

Additional context

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the Java auto-instrumentation behavior with the jar, tracecontext, baggage, and otel_propagator across two Azure Function apps using version 1.38. Compare the parent and child spans and their service names. Done means one parent trace contains two child spans, with each span using its respective service name.

Written by the indexing model from the issue text.

Assessment

Tech stack
azure, java
Domain
cloud, observability
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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