三节点集群，其中一个节点硬盘满了，导致部分数据写入失败，删除数据也失败

Description

Contributor guide

Tech stack

csql

Domain

databasebackend

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.

fresh

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

mostly clear

Prerequisites

TDengine basicsdisk space managementSQL delete operations

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

25

Research direction

Investigate why the delete operation fails when disk is full in a TDengine cluster. Examine the delete implementation in the source code, particularly in the vnode or dnode modules. Consider whether the error handling can be improved to allow deletes during low disk space or if a workaround (e.g., freeing disk space through other means) can be documented. Also review existing documentation for disk space management and recommend updates if necessary.