GreptimeTeam/greptimedb

Compatibility test suit

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#3,728 opened on Apr 17, 2024

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help wanted

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Description

What type of enhancement is this?

Tech debt reduction, User experience

What does the enhancement do?

With DB going stable, we should care about backward compatibility and forward compatibility between essential versions.

There is an existing compatibility test suit which leverages sqlness as harness. But it has some problems:

  • Depending on a "bug" behavior of sqlness https://github.com/GreptimeTeam/greptimedb/pull/3724
  • Doesn't aware of feature version. I.e., some features are not available in the old version, and we may deprecate some features in the new version. Mechanisms like #[since(v0.7.0)] and #[till(v0.8.0)] looks necessary to compatibility test.
  • It's based on bash script 😣 Prefer Rust/Python/Go etc that are easy to maintain

Implementation challenges

No response

Contributor guide

Research direction
Review the existing compatibility test suite at tests/compat/README.md. Understand the sqlness bug referenced in PR #3724. Design a mechanism for feature versioning (e.g., #[since] and #[till] attributes). Propose a rewrite in Rust, ensuring backward and forward compatibility testing.
Tech stack
rust
Domain
databasetesting qa
Issue type
Test
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.
Clear
Prerequisites
RustGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40