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[WIP]: add 8.5.1 release notes #19473

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---
title: TiDB 8.5.1 Release Notes
summary: 了解 TiDB 8.5.1 版本的兼容性变更、改进提升，以及错误修复。
---

# TiDB 8.5.1 Release Notes

发版日期：2025 年 x 月 x 日

TiDB 版本：8.5.1

试用链接：[快速体验](https://docs.pingcap.com/zh/tidb/v8.5/quick-start-with-tidb) | [生产部署](https://docs.pingcap.com/zh/tidb/v8.5/production-deployment-using-tiup) | [下载离线包](https://cn.pingcap.com/product-community/?version=v8.5.1#version-list)

## 兼容性变更

- note [#issue](https://github.com/pingcap/${repo-name}/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

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## 操作系统支持变更

- 从 TiDB v8.5.1 起重新支持 CentOS Linux 7。用户现在可以运行在 CentOS Linux 7 上的 TiDB 集群升级到 v8.5.1 版本。
- 根据 [CentOS Linux EOL](https://www.redhat.com/en/blog/centos-linux-has-reached-its-end-life-eol)，CentOS Linux 7 的上游支持于 2024 年 6 月 30 日终止。从 TiDB v8.4.0 版本开始，我们暂停了对 CentOS Linux 7 的支持，并建议用户使用 Rocky Linux 9.1 及以上的版本。如果在使用 CentOS Linux 7 的情况下升级到 TiDB v8.4.0 或 v8.5.0 版本，将导致集群不可用。
- 尽管 TiDB v8.5.1 重新支持 CentOS Linux 7，但由于 CentOS Linux 7 已经达到其生命周期的终止（EOL），我们强烈建议用户参考该系统的[官方声明和安全建议](https://www.redhat.com/en/blog/centos-linux-has-reached-its-end-life-eol)，并考虑尽快迁移到受支持的操作系统版本，如 Rocky Linux 9.1 及以上版本。
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## 改进提升

+ TiDB

- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiKV

- note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ PD

- note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiFlash

- note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- (dup): release-7.5.5.md > 改进提升> TiFlash - 优化在存算分离架构下，读节点从 S3 下载文件异常时的重试策略 [#9695](https://github.com/pingcap/tiflash/issues/9695) @[JinheLin](https://github.com/JinheLin)

+ Tools

+ Backup & Restore (BR)

- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiCDC

- note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiDB Data Migration (DM)

- note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiDB Lightning

- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ Dumpling

- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiUP

- note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiDB Binlog

- note [#issue](https://github.com/pingcap/tidb-binlog/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tidb-binlog/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

## 错误修复

+ TiDB

- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- (dup): release-7.5.5.md > 错误修复> TiDB - 修复添加索引期间，计划缓存使用了错误的 schema 导致数据索引不一致的问题 [#56733](https://github.com/pingcap/tidb/issues/56733) @[wjhuang2016](https://github.com/wjhuang2016)
- (dup): release-7.5.5.md > 错误修复> TiDB - 修复 Grafana 中 **Stats Healthy Distribution** 面板的数据可能错误的问题 [#57176](https://github.com/pingcap/tidb/issues/57176) @[hawkingrei](https://github.com/hawkingrei)
- (dup): release-7.5.5.md > 错误修复> TiDB - 修复设置 `tidb_gogc_tuner_max_value` 和 `tidb_gogc_tuner_min_value` 时，由于最大值为空导致出现错误的 warning 信息的问题 [#57889](https://github.com/pingcap/tidb/issues/57889) @[hawkingrei](https://github.com/hawkingrei)
- (dup): release-7.5.5.md > 错误修复> TiDB - 修复查询 TiFlash 系统表中默认超时时间过短的问题 [#57816](https://github.com/pingcap/tidb/issues/57816) @[JaySon-Huang](https://github.com/JaySon-Huang)

+ TiKV

- note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- (dup): release-8.1.2.md > 错误修复> TiKV - 修复 Region Split 后可能无法快速选出 Leader 的问题 [#17602](https://github.com/tikv/tikv/issues/17602) @[LykxSassinator](https://github.com/LykxSassinator)
- (dup): release-8.1.2.md > 错误修复> TiKV - 修复磁盘卡住时，TiKV 无法向 PD 上报心跳的问题 [#17939](https://github.com/tikv/tikv/issues/17939) @[LykxSassinator](https://github.com/LykxSassinator)

+ PD

- note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiFlash

- note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- (dup): release-7.5.5.md > 错误修复> TiFlash - 修复在存算分离架构下，对新增的列进行查询可能返回错误结果的问题 [#9665](https://github.com/pingcap/tiflash/issues/9665) @[zimulala](https://github.com/zimulala)

+ Tools

+ Backup & Restore (BR)

- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiCDC

- note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiDB Data Migration (DM)

- note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiDB Lightning

- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ Dumpling

- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiUP

- note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})

+ TiDB Binlog

- note [#issue](https://github.com/pingcap/tidb-binlog/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
- note [#issue](https://github.com/pingcap/tidb-binlog/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id})
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