schema_version: 1
id: sustained-node-memory-pressure-during-transaction-workload
title: Sustained node memory pressure during transaction workload
status: draft
owner: codex
source: jira
environment:
  profile: stable-dedicated
  cluster_id: '1379661944646416018'
  cluster_type: dedicated
  tidb_version: v7.5.6
time_window:
  incident_at: '2026-08-04T23:10:00Z'
  allowed:
  - id: reported_incident_window
    start: '2026-08-04T22:30:00Z'
    end: '2026-08-05T00:30:00Z'
prompt:
  text: 请分析集群 1379661944646416018 在 2026-08-04T22:30:00Z 到 2026-08-05T00:30:00Z 的 TiKV 内存持续上涨。一个 TiKV 节点的内存接近 94 GiB，其他节点也偏高，业务同时存在短事务提交和并发范围扫描。请判断是否是正常缓存、业务锁竞争还是版本缺陷，并给出验证和恢复方案。
tags:
- transaction
- memory
- tikv
case_tier: P0
cost_tier: medium
followup:
  scheduled_max_followups: 0
execution:
  acp_bash_timeout_s: 900