MyCATApache/Mycat-Server

Transactional continuity question

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#2955 opened on Oct 17, 2024

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help wanted

Description

**描述你使用过程中遇到的问题: ** Hello I want to ask, when I connect to mycat to perform a transaction, using the read-write separation function, the back-end cluster to switch, if I am a write operation, the subsequent execution is still in the transaction ?

Contributor guide

Tech stack
javamysql
Domain
database
Issue type
research
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.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
needs maintainer response
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
basic knowledge of Mycatunderstanding of transactions
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
The issue asks whether a write operation within a transaction will remain in the same transaction when the read write splitting switches backend clusters. Research Mycat's transaction handling and read write splitting logic. Check the Mycat documentation or source code (e.g., `MycatServer.java`, `TransactionManager.java`) to determine how transaction boundaries are maintained across backend switches. Provide a clear answer with references.