taosdata/TDengine

最近测试发现TDengine的WAL_LEVEL设置为2时，插入数据后并不会主动进行刷盘

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#33,659 opened on Nov 20, 2025

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Description

WAL_LEVEL设置为2
WAL_FSYNC_PERIOD设置为3000 等待一段时间后，并没有进行刷盘操作

Contributor guide

Research direction
Inspect the WAL flush logic when WAL LEVEL is set to 2 and trace the path to see why automatic flush is not performed.
Tech stack
c
Domain
database
Issue type
Bug
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.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitC
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75