🐛 Bug Report: Trace graph is incorrectly stitched for Langgraph agents.

The problem

Issue traceloop/openllmetry#3203 (closed, 9 comments): ### Which component is this bug for? Langchain Instrumentation ### 📜 Description Trace graph is incorrect, the span created inside the nodes are not listed under the node spans, they list under parent/root span. ### 👟 Reproduction steps Run the project, with opentelmetry-instrumentation, below is the command which i'm using to run the code opentelemetry-instrument \ --tracesexporter otlp \ --metricsexporter none \ --servicename testservice \ --exporterotlpendpoint YOURHOST:4317 \ --exporterotlpinsecure true \ poetry run python testagent.

The fix

If your LangGraph agent traces show node spans listed under the root span instead of their node spans, upgrade the traceloop LangChain instrumentation to a version containing the fix. The maintainers fixed it via LANGGRAPHGRAPHSPAN_KEY context propagation and closed the issue after landing it in main.

Notes

Thread: https://github.com/traceloop/openllmetry/issues/3203. Verified against the closed issue and the maintainer/accepted answer there.

In https://github.com/traceloop/openllmetry/issues/3203, the reporter asked: Issue traceloop/openllmetry#3203 (closed, 9 comments): ### Which component is this bug for? Langchain Instrumentation ### 📜 Description Trace graph is incorrect, the span created inside the nodes are not listed under the node spans, they list under parent/root span. ### 👟 Reproduction steps Run the project, with opentelmetry-instrumentation, below is the command which i'm using to run the code opentelemetry-instrument \ --tracesexporter otlp \ --metricsexporter none \ --servicename testservice \ --exporterotlpendpoint YOURHOST:4317 \ --exporterotlpinsecure true \ poetry run python testagent. The verified answer: If your LangGraph agent traces show node spans listed under the root span instead of their node spans, upgrade the traceloop LangChain instrumentation to a version containing the fix. The maintainers fixed it via LANGGRAPHGRAPHSPAN_KEY context propagation and closed the issue after landing it in main. Source thread: https://github.com/traceloop/openllmetry/issues/3203