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releases: add 6.6.0 release notes (#12652)
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TomShawn committed Feb 20, 2023
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4 changes: 3 additions & 1 deletion TOC.md
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- [文档中心](https://docs.pingcap.com/zh)
- 关于 TiDB
- [TiDB 简介](/overview.md)
- [TiDB 6.5 Release Notes](/releases/release-6.5.0.md)
- [TiDB 6.6 Release Notes](/releases/release-6.6.0.md)
- [功能概览](/basic-features.md)
- [与 MySQL 的兼容性](/mysql-compatibility.md)
- [使用限制](/tidb-limitations.md)
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- [版本发布时间线](/releases/release-timeline.md)
- [TiDB 版本规则](/releases/versioning.md)
- [TiDB 离线包](/binary-package.md)
- v6.6
- [6.6.0](/releases/release-6.6.0.md)
- v6.5
- [6.5.0](/releases/release-6.5.0.md)
- v6.4
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4 changes: 1 addition & 3 deletions _index.md
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[扩容集群](https://docs.pingcap.com/zh/tidb/dev/scale-tidb-using-tiup)

[备份数据](https://docs.pingcap.com/zh/tidb/dev/br-usage-backup)

[恢复数据](https://docs.pingcap.com/zh/tidb/dev/br-usage-restore)
[备份与恢复](https://docs.pingcap.com/zh/tidb/dev/backup-and-restore-overview)

[日常巡检](https://docs.pingcap.com/zh/tidb/dev/daily-check)

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609 changes: 609 additions & 0 deletions releases/release-6.6.0.md

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4 changes: 4 additions & 0 deletions releases/release-notes.md
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TiDB 历史版本发布声明如下:

## 6.6

- [6.6.0](/releases/release-6.6.0.md): 2023-02-20

## 6.5

- [6.5.0](/releases/release-6.5.0.md): 2022-12-29
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1 change: 1 addition & 0 deletions releases/release-timeline.md
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Expand Up @@ -9,6 +9,7 @@ summary: 了解 TiDB 的版本发布时间线。

| 版本 | 发布日期 |
| :--- | :--- |
| [6.6.0](/releases/release-6.6.0.md) | 2023-02-20 |
| [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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14 changes: 9 additions & 5 deletions system-variables.md
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Expand Up @@ -1342,16 +1342,20 @@ MPP 是 TiFlash 引擎提供的分布式计算框架,允许节点之间的数
- 作用域:GLOBAL
- 是否持久化到集群:是
- 类型:布尔型
- 默认值:`OFF`
- 该变量用于一个未发布的特性,**请勿修改该变量值**
- 默认值:`ON`
- 这个变量用来控制是否开启历史统计信息。默认值为 `ON` 表示默认开启历史统计信息
### `tidb_enable_historical_stats_for_capture`
> **警告:**
>
> 当前版本中该变量控制的功能尚未完全生效,请保留默认值。
- 作用域:GLOBAL
- 是否持久化到集群:是
- 类型:布尔型
- 默认值:`OFF`
- 该变量用于一个未发布的特性,**请勿修改该变量值**
- 这个变量用来控制 `PLAN REPLAYER CAPTURE` 抓取的内容是否默认带历史统计信息。默认值为 `OFF`,表示默认不带历史统计信息
### `tidb_enable_index_merge` <span class="version-mark">从 v4.0 版本开始引入</span>
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- 作用域:SESSION | GLOBAL
- 是否持久化到集群:是
- 类型:布尔型
- 默认值:`OFF`
- 这个变量用来控制是否开启 [`PLAN REPLAYER CAPTURE` 功能](/sql-plan-replayer.md#使用-plan-replayer-capture-抓取目标计划)。默认值 `OFF` 代表关闭 `PLAN REPLAYER CAPTURE` 功能。
- 默认值:`ON`
- 这个变量用来控制是否开启 [`PLAN REPLAYER CAPTURE` 功能](/sql-plan-replayer.md#使用-plan-replayer-capture-抓取目标计划)。默认值 `ON` 代表开启 `PLAN REPLAYER CAPTURE` 功能。
### `tidb_enable_plan_replayer_continues_capture`
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2 changes: 1 addition & 1 deletion tidb-resource-control.md
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Expand Up @@ -5,7 +5,7 @@ summary: 介绍如何通过资源管控能力来实现对应用资源消耗的

# 使用资源管控 (Resource Control) 实现资源隔离

> **警告:**
> **警告**
>
> 资源管控是 TiDB 在 v6.6.0 中引入的实验特性,其语法或者行为表现在 GA 前可能会发生变化。
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6 changes: 5 additions & 1 deletion tikv-configuration-file.md
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Expand Up @@ -1138,7 +1138,11 @@ rocksdb defaultcf、rocksdb writecf 和 rocksdb lockcf 相关的配置项。

### `block-cache-size`

+ 一个 RocksDB block 的默认缓存大小。从 v6.6.0 起,该配置仅用于计算 `storage.block-cache.capacity` 的默认值。
> **警告:**
>
> 从 v6.6.0 起,该配置项被废弃。
+ 一个 RocksDB block 的默认缓存大小。
+ `defaultcf` 默认值:机器总内存 * 25%
+ `writecf` 默认值:机器总内存 * 15%
+ `lockcf` 默认值:机器总内存 * 2%
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2 changes: 1 addition & 1 deletion upgrade-tidb-using-tiup.md
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### 2.1 查阅兼容性变更

查阅 TiDB v6.5.0 release notes 中的[兼容性变更](/releases/release-6.5.0.md#兼容性变更)[废弃功能](/releases/release-6.5.0.md#废弃功能)。如果有任何变更影响到了你的升级,请采取相应的措施。
查阅 TiDB v6.6.0 release notes 中的[兼容性变更](/releases/release-6.6.0.md#兼容性变更)。如果有任何变更影响到了你的升级,请采取相应的措施。

### 2.2 升级 TiUP 或更新 TiUP 离线镜像

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