DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Rust programmingprometheus metrics concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
85
Research direction
Examine issue #254 in the tikv/rust prometheus repository to understand the requirements for LocalIntHistogram and IntHistogram. Study the current histogram implementation in the prometheus crate to see how to extend it. Look at the tikv codebase for examples of how metrics are collected and reported. Then implement the missing histogram types, ensuring they follow the same patterns.
