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

The `process` span having two links to the `receive` one in Kafka Streams application

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bug
Dominant language
Java
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Description

When using the Java agent to instrument a simple Kafka Streams based application, enabling -Dotel.instrumentation.messaging.experimental.receive-telemetry.enabled=true, what I get is a process span having two links to the receive one: a CHILD_OF and FOLLOW_FROM. I would expect only the FOLLOW_FROM.

"references": [
    {
        "refType": "FOLLOWS_FROM",
        "traceID": "df5c997a34fc22e61592c0ce3d13cfa0",
        "spanID": "67b9e44adbb5ed34"
    },
    {
        "refType": "CHILD_OF",
        "traceID": "df5c997a34fc22e61592c0ce3d13cfa0",
        "spanID": "67b9e44adbb5ed34"
    }
]

This issue was initially raised on #6443

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the simple Kafka Streams application with the Java agent and -Dotel.instrumentation.messaging.experimental.receive-telemetry.enabled=true, then inspect the process span references. Review the context from issue #6443 and trace how the receive span is related; done means the process span retains only the expected FOLLOWS_FROM link.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, kafka
Domain
distributed-systems, stream-processing
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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