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OTel: parallel task dispatch emits successful chat spans without response identity or usage

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評估

難度
4/5
預估耗時
3-5 天
新手友好度
48/100
Issue 類型
缺陷
描述清晰度
基本清楚
活躍度
活躍
技術堆疊
shell
領域
cli, observability

研究方向

使用僅匯出中繼資料的方式重現 JSONL trace,並檢查平行工作分派路徑以及根層級 chat span 的發出。完成標準是:每個已完成的推論在可用時都包含回應識別資訊和用量,而遭放棄或未完成的嘗試不會被記錄為成功的聊天。

由索引模型根據 Issue 內容生成。

描述

triage
Describe the bug

With metadata-only OpenTelemetry file export enabled, a prompt-mode run that dispatches two named subagents emits two chat spans that have successful status and a stop finish reason but omit all of:

  • gen_ai.response.id
  • gen_ai.response.model
  • gen_ai.usage.input_tokens
  • gen_ai.usage.output_tokens

This also occurs when the parent model is explicitly pinned, so it is not limited to --model auto.

The remaining parent and subagent chat spans in the same trace contain complete request/response model and usage fields.

Affected version

GitHub Copilot CLI 1.0.83 on macOS.

Steps to reproduce
  1. Enable the file exporter and force content capture off.
  2. Run prompt mode with streaming enabled and an explicitly pinned parent model.
  3. In one synthetic prompt, use the task tool twice with two named agent types and explicit models.
  4. Parse the resulting JSONL.

A representative trace contained one root invoke_agent, two execute_tool task spans, two nested named invoke_agent spans, and six chat spans. Every completed-response chat had the expected provider, request model, response model, response ID, and usage. Two root-level chats had request model, streaming=true, status code 0, and finish reason stop, but no response identity or usage.

Expected behavior

Each logical completed inference should contain independently reported response identity and usage when available. An abandoned, cancelled, routing, or retry attempt should not look like a successful completed chat: it should carry an explicit attempt/outcome classification or a non-success terminal status. Consumers must not synthesize gen_ai.response.model from the requested model.

Privacy

The reproduction used synthetic prompts with OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT=false. No prompt, response, repository, or credential content is included here.

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  • 沒有 Dockerfile 或 Docker Compose 檔案
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  • 閱讀貢獻指南

從這裡開始

  1. 先讀完整個 Issue,再讀專案的貢獻指南。
  2. 在 Issue 下留言說明你要接手 —— 這能避免兩個人做同樣的事。
  3. Fork 儲存庫,在一個分支上完成修改。
  4. 送出 Pull Request,並在描述裡引用這個 Issue 編號。

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