etcd-io/etcd

Add server information to robustness response information

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#20932 opened on Nov 16, 2025

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area/robustness-testinghelp wantedtype/feature

Description

What would you like to be added?

Add MemberId to from response header to the model.EtcdResponse. Ensure it's added to json response and visualized in the porcupine linearization.

Edit: Would be great to have this information showing in tooltip, for that we need https://github.com/anishathalye/porcupine/pull/39

Tasks:

/cc @sneaky-potato @henrybear327 @nwnt

Why is this needed?

Makes it easier to debug linearization failure

Contributor guide

Tech stack
go
Domain
backenddatabaseobservability
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Go programmingUnderstanding of etcdFamiliarity with linearizability testing
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
This issue requires adding MemberId from the response header to the etcd robustness response. The work involves two tasks: modifying etcd (PR #21016) and updating the porcupine library (PR 39). Start by reviewing the existing robustness code in the etcd repository, particularly the `model.EtcdResponse` struct and how response headers are processed. Then, collaborate on the porcupine PR to ensure the tooltip displays the MemberId. The issue is actively discussed with assignees, so coordinate with them to avoid duplication.