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resource-control: remove warning about runaway #17209

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merged 2 commits into from May 13, 2024
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resource-control: remove warning about runaway #17209

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resource-control: remove warning about runaway
nolouch Apr 25, 2024
8ca6a1c
Remove warning in information-schema-runaway-watches.md
lilin90 Apr 26, 2024
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4 changes: 0 additions & 4 deletions information-schema/information-schema-runaway-watches.md
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Expand Up @@ -28,10 +28,6 @@ DESC RUNAWAY_WATCHES;
8 rows in set (0.00 sec)
```

> **警告：**
>
> 该功能目前为实验特性，不建议在生产环境中使用。该功能可能会在未事先通知的情况下发生变化或删除。如果发现 bug，请在 GitHub 上提 [issue](https://github.com/pingcap/tidb/issues) 反馈。

## 示例

查询 Runaway Queries 识别名单：
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4 changes: 0 additions & 4 deletions sql-statements/sql-statement-query-watch.md
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Expand Up @@ -7,10 +7,6 @@ summary: TiDB 数据库中 QUERY WATCH 的使用概况。

`QUERY WATCH` 语句用于在资源组中手动管理 Runaway Queries 监控列表。

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> **警告：**
>
> 该功能目前为实验特性，不建议在生产环境中使用。该功能可能会在未事先通知的情况下发生变化或删除。如果发现 bug，请在 GitHub 上提 [issue](https://github.com/pingcap/tidb/issues) 反馈。

## 语法图

```ebnf+diagram
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4 changes: 0 additions & 4 deletions tidb-resource-control.md
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Expand Up @@ -206,10 +206,6 @@ SELECT /*+ RESOURCE_GROUP(rg1) */ * FROM t limit 10;

### 管理资源消耗超出预期的查询 (Runaway Queries)

> **警告：**
>
> 该功能目前为实验特性，不建议在生产环境中使用。该功能可能会在未事先通知的情况下发生变化或删除。如果发现 bug，请在 GitHub 上提 [issue](https://github.com/pingcap/tidb/issues) 反馈。

Runaway Query 是指执行时间或消耗资源超出预期的查询（仅指 `SELECT` 语句）。下面使用 **Runaway Queries** 表示管理 Runaway Query 这一功能。

- 自 v7.2.0 起，TiDB 资源管控引入了对 Runaway Queries 的管理。你可以针对某个资源组设置条件来识别 Runaway Queries，并自动发起应对操作，防止集群资源完全被 Runaway Queries 占用而影响其他正常查询。你可以在 [`CREATE RESOURCE GROUP`](/sql-statements/sql-statement-create-resource-group.md) 或者 [`ALTER RESOURCE GROUP`](/sql-statements/sql-statement-alter-resource-group.md) 中配置 `QUERY_LIMIT` 字段，通过规则识别来管理资源组的 Runaway Queries。
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