Feign observation span is not put in "scope" - loggers do not see current spanId

描述

貢獻者指南

技術棧

javaspring

領域

backendapiobservability

議題類型

bug

難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。

3

預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。

1-3 hours

活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。

fresh

清晰度議題是否清楚說明預期改動、驗收標準和下一步。

clear

前置要求

JavaSpringMicrometer Observation

新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。

50

研究方向

The issue is that the Feign observation span is not placed in scope, causing MDC to retain the parent spanId. Investigate the Feign observation instrumentation, likely in the `feign micrometer` module. Check if the observation is being opened and closed correctly, and ensure that the span is set as the current span in the tracing context. Look at the Micrometer Observation API's `Observation.Scope` usage and compare with similar tracing integrations. The reproduction repository is at https://github.com/norbson/feign tracing issue.