From b3c3e772406a17a448805ccb972c524ffbb04058 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Thu, 16 Apr 2026 03:59:30 +0000 Subject: [PATCH 1/2] Auto-sync: Update English docs from Chinese PR Synced from: https://github.com/pingcap/docs-cn/pull/21559 Target PR: https://github.com/pingcap/docs/pull/22766 AI Provider: azure Co-authored-by: github-actions[bot] --- mysql-schema/mysql-schema.md | 2 +- releases/release-8.5.6.md | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/mysql-schema/mysql-schema.md b/mysql-schema/mysql-schema.md index d86449b85a7e0..dfc3ae977e6a3 100644 --- a/mysql-schema/mysql-schema.md +++ b/mysql-schema/mysql-schema.md @@ -34,7 +34,7 @@ These system tables contain grant information about user accounts and their priv * `tidb_server_version`: the version information of TiDB when it is initialized. Note that this value is read-only and cannot be modified. * `system_tz`: the system time zone of TiDB. * `new_collation_enabled`: whether TiDB has enabled the [new framework for collations](/character-set-and-collation.md#new-framework-for-collations). Note that this value is read-only and cannot be modified. - * `cluster_id`: the unique identifier of the TiDB cluster. Note that this value is read-only and cannot be modified. + * `cluster_id` (introduced in v8.5.6): the unique identifier of the TiDB cluster. Note that this value is read-only and cannot be modified. ## Server-side help system tables diff --git a/releases/release-8.5.6.md b/releases/release-8.5.6.md index fecc54839dcb4..86f725b07bd66 100644 --- a/releases/release-8.5.6.md +++ b/releases/release-8.5.6.md @@ -120,6 +120,12 @@ For TiDB clusters newly deployed in v8.5.5 (that is, not upgraded from versions | TiKV | [`resource-metering.enable-network-io-collection`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#enable-network-io-collection-new-in-v856) | Newly added | Controls whether TiKV network traffic and logical I/O metrics are additionally collected in Top SQL. The default value is `false`. | | TiCDC | [`sink.csv.output-field-header`](https://docs.pingcap.com/tidb/v8.5/ticdc-csv#use-csv) | Newly added | Controls whether a header row is output in CSV files. The default value is `false`. This parameter applies only to the TiCDC new architecture. | +### System table changes + +| System table | Change type | Description | +| -------- | -------- | -------- | +| [`mysql.tidb`](https://docs.pingcap.com/tidb/v8.5/mysql-schema#cluster-information-system-table) | Modified | Added the `cluster_id` field to record the unique identifier of the TiDB cluster. Note that this value is read-only and cannot be modified. | + ## Deprecated features - Starting from v8.5.6, statistics Version 1 (`tidb_analyze_version = 1`) is deprecated and will be removed in a future release. It is recommended that you use statistics Version 2 (`tidb_analyze_version = 2`) and [migrate existing objects that use statistics Version 1 to Version 2](https://docs.pingcap.com/tidb/v8.5/statistics#switch-between-statistics-versions) for more accurate statistics. From 990a75bc0ec8eb1312f5894a3aca73fefec76c60 Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Thu, 16 Apr 2026 12:04:19 +0800 Subject: [PATCH 2/2] Apply suggestions from code review --- mysql-schema/mysql-schema.md | 2 +- releases/release-8.5.6.md | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/mysql-schema/mysql-schema.md b/mysql-schema/mysql-schema.md index dfc3ae977e6a3..3551c1d832346 100644 --- a/mysql-schema/mysql-schema.md +++ b/mysql-schema/mysql-schema.md @@ -34,7 +34,7 @@ These system tables contain grant information about user accounts and their priv * `tidb_server_version`: the version information of TiDB when it is initialized. Note that this value is read-only and cannot be modified. * `system_tz`: the system time zone of TiDB. * `new_collation_enabled`: whether TiDB has enabled the [new framework for collations](/character-set-and-collation.md#new-framework-for-collations). Note that this value is read-only and cannot be modified. - * `cluster_id` (introduced in v8.5.6): the unique identifier of the TiDB cluster. Note that this value is read-only and cannot be modified. + * `cluster_id` (New in v8.5.6): the unique identifier of the TiDB cluster. Note that this value is read-only and cannot be modified. ## Server-side help system tables diff --git a/releases/release-8.5.6.md b/releases/release-8.5.6.md index 86f725b07bd66..a5d6540c3b19e 100644 --- a/releases/release-8.5.6.md +++ b/releases/release-8.5.6.md @@ -124,7 +124,7 @@ For TiDB clusters newly deployed in v8.5.5 (that is, not upgraded from versions | System table | Change type | Description | | -------- | -------- | -------- | -| [`mysql.tidb`](https://docs.pingcap.com/tidb/v8.5/mysql-schema#cluster-information-system-table) | Modified | Added the `cluster_id` field to record the unique identifier of the TiDB cluster. Note that this value is read-only and cannot be modified. | +| [`mysql.tidb`](https://docs.pingcap.com/tidb/v8.5/mysql-schema#cluster-status-system-tables) | Modified | Adds the `cluster_id` field, which represents the unique identifier of a TiDB cluster. Note that `cluster_id` is read-only and cannot be modified. | ## Deprecated features