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add v6.1.5 release notes (#13130) (#13212)
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ti-chi-bot authored Feb 28, 2023
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1 change: 1 addition & 0 deletions TOC.md
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- v6.2
- [6.2.0-DMR](/releases/release-6.2.0.md)
- v6.1
- [6.1.5](/releases/release-6.1.5.md)
- [6.1.4](/releases/release-6.1.4.md)
- [6.1.3](/releases/release-6.1.3.md)
- [6.1.2](/releases/release-6.1.2.md)
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51 changes: 51 additions & 0 deletions releases/release-6.1.5.md
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---
title: TiDB 6.1.5 Release Notes
summary: 了解 TiDB 6.1.5 版本的兼容性变更、改进提升,以及错误修复。
---

# TiDB 6.1.5 Release Notes

发版日期:2023 年 2 月 28 日

TiDB 版本:6.1.5

试用链接:[快速体验](https://docs.pingcap.com/zh/tidb/v6.1/quick-start-with-tidb) | [生产部署](https://docs.pingcap.com/zh/tidb/v6.1/production-deployment-using-tiup) | [下载离线包](https://cn.pingcap.com/product-community/?version=v6.1.5#version-list)

## 兼容性变更

- 自 2023 年 2 月 20 日起,新发布的 TiDB 和 TiDB Dashboard 版本(包含 6.1.5),默认关闭[遥测功能](/telemetry.md),即默认不再收集使用情况信息分享给 PingCAP。如果升级至这些版本前使用默认的遥测配置,则升级后遥测功能处于关闭状态。具体的版本可参考 [TiDB 版本发布时间线](/releases/release-timeline.md)

- 系统变量 [`tidb_enable_telemetry`](/system-variables.md#tidb_enable_telemetry-从-v402-版本开始引入) 默认值由 `ON` 修改为 `OFF`
- TiDB 配置项 [`enable-telemetry`](/tidb-configuration-file.md#enable-telemetry-从-v402-版本开始引入) 默认值由 `true` 改为 `false`
- PD 配置项 [`enable-telemetry`](/pd-configuration-file.md#enable-telemetry) 默认值由 `true` 改为 `false`

- 从 v1.11.3 起,新部署的 TiUP 默认关闭遥测功能,即默认不再收集使用情况信息。如果从 v1.11.3 之前的 TiUP 版本升级至 v1.11.3 或更高 TiUP 版本,遥测保持升级前的开启或关闭状态。

## 提升改进

- TiDB

- 允许 `AUTO_RANDOM` 列作为聚簇复合索引中的第一列 [#38572](https://github.com/pingcap/tidb/issues/38572) @[tangenta](https://github.com/tangenta)

## Bug 修复

+ TiDB

- 修复 data race 可能导致 TiDB 重启的问题 [#27725](https://github.com/pingcap/tidb/issues/27725) @[XuHuaiyu](https://github.com/XuHuaiyu)
- 修复当使用 Read Committed 隔离级别时 `UPDATE` 语句可能读不到最新数据的问题 [#41581](https://github.com/pingcap/tidb/issues/41581) @[cfzjywxk](https://github.com/cfzjywxk)

- PD

- 修复调用 `ReportMinResolvedTS` 过于频繁导致 PD OOM 的问题 [#5965](https://github.com/tikv/pd/issues/5965) @[HundunDM](https://github.com/HunDunDM)

+ Tools

+ TiCDC

- 修复当同步的延迟过大时 apply redo log 可能会出现 OOM 的问题 [#8085](https://github.com/pingcap/tiflow/issues/8085) @[CharlesCheung96](https://github.com/CharlesCheung96)
- 修复当开启 redo log 写 meta 时性能下降的问题 [#8074](https://github.com/pingcap/tiflow/issues/8074) @[CharlesCheung96](https://github.com/CharlesCheung96)

+ TiDB Data Migration (DM)

- 修复 `binlog-schema delete` 命令执行失败的问题 [#7373](https://github.com/pingcap/tiflow/issues/7373) @[liumengya94](https://github.com/liumengya94)
- 修复当最后一个 binlog 是被 skip 的 DDL 时,checkpoint 不推进的问题 [#8175](https://github.com/pingcap/tiflow/issues/8175) @[D3Hunter](https://github.com/D3Hunter)
1 change: 1 addition & 0 deletions releases/release-notes.md
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## 6.1

- [6.1.5](/releases/release-6.1.5.md): 2023-02-28
- [6.1.4](/releases/release-6.1.4.md): 2023-02-08
- [6.1.3](/releases/release-6.1.3.md): 2022-12-05
- [6.1.2](/releases/release-6.1.2.md): 2022-10-24
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1 change: 1 addition & 0 deletions releases/release-timeline.md
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| 版本 | 发布日期 |
| :--- | :--- |
| [6.1.5](/releases/release-6.1.5.md) | 2023-02-28 |
| [6.1.4](/releases/release-6.1.4.md) | 2023-02-08 |
| [6.5.0](/releases/release-6.5.0.md) | 2022-12-29 |
| [5.1.5](/releases/release-5.1.5.md) | 2022-12-28 |
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