oceanbase/miniob

运行时参数变更的能力

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#235 opened on Aug 16, 2023

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featurehelp wanted

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Description

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] 当前需要有一些手段来控制运行时的参数，比如是否打开rewriter，或者打开关闭某些规则。

Describe the solution you'd like A clear and concise description of what you want to happen. 增加系统变量，可以动态更新。 参考MySQL的设计，可以增加全局变量、会话变量的概念，并支持修改和查询。

Contributor guide

Research direction
Study MySQL's global and session variable implementation, design a system variable interface for MiniOB, and implement dynamic update of runtime parameters such as enabling rewriter or specific rules.
Tech stack
cpp
Domain
database
Issue type
Feature
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.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C++Database concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65