From 25b3161b62018bc5e10bb16342a385d866a66625 Mon Sep 17 00:00:00 2001 From: houfaxin Date: Mon, 24 Feb 2025 16:17:22 +0800 Subject: [PATCH 1/4] Update backup-and-restore-overview.md --- br/backup-and-restore-overview.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/br/backup-and-restore-overview.md b/br/backup-and-restore-overview.md index e6e81e692c4f8..48c84b594b5a1 100644 --- a/br/backup-and-restore-overview.md +++ b/br/backup-and-restore-overview.md @@ -145,7 +145,7 @@ This section introduces the BR compatibility information for all [Long-Term Supp > **Note:** > -> Known issue: in v7.2.0, some system table fields are changed to case-sensitive, which might cause cross-version backup and restore failures. For more details, see [issue #43717](https://github.com/pingcap/tidb/issues/43717). +> Known issue: Starting from version v7.2.0, fields of some system tables in newly created clusters become case-sensitive. However, for clusters that are **upgraded online** from versions earlier than v7.2.0 to v7.2.0 or later, the corresponding fields remain case-insensitive. Restore with system tables from backup taken from clusters with those case-insensitive fields to clusters with the case-sensitive fields or vise verse will fail. For more details, see [Issue #43717](https://github.com/pingcap/tidb/issues/43717). The following table lists the compatibility matrix for full backups: From e03965231c65cb365ed8638f6a1eba3c6c5843ff Mon Sep 17 00:00:00 2001 From: xixirangrang Date: Mon, 24 Feb 2025 16:26:23 +0800 Subject: [PATCH 2/4] Update backup-and-restore-overview.md --- br/backup-and-restore-overview.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/br/backup-and-restore-overview.md b/br/backup-and-restore-overview.md index 48c84b594b5a1..f98a7a60821bd 100644 --- a/br/backup-and-restore-overview.md +++ b/br/backup-and-restore-overview.md @@ -147,7 +147,7 @@ This section introduces the BR compatibility information for all [Long-Term Supp > > Known issue: Starting from version v7.2.0, fields of some system tables in newly created clusters become case-sensitive. However, for clusters that are **upgraded online** from versions earlier than v7.2.0 to v7.2.0 or later, the corresponding fields remain case-insensitive. Restore with system tables from backup taken from clusters with those case-insensitive fields to clusters with the case-sensitive fields or vise verse will fail. For more details, see [Issue #43717](https://github.com/pingcap/tidb/issues/43717). -The following table lists the compatibility matrix for full backups: +The following table lists the compatibility matrix for full backups. For clusters upgraded from a version prior to v7.2.0 to v7.2.0 or later, their behavior is consistent with that of backups from v7.1.0. | Backup version | Compatible restore versions | Incompatible restore versions | |:---------|:----------------|:------------------| @@ -156,7 +156,7 @@ The following table lists the compatibility matrix for full backups: | v7.5.0 | v7.5.0 and later | - | | v8.1.0 | v8.1.0 and later | - | -The following table lists the compatibility matrix for log backups: +The following table lists the compatibility matrix for log backups. For clusters upgraded from a version prior to v7.2.0 to v7.2.0 or later, their behavior is consistent with that of backups from v7.1.0. | Backup version | Compatible restore versions | Incompatible restore versions | |:---------|:----------------|:------------------| From 6fbfb9f996bc0222ab5861d6e13a1679cb64484c Mon Sep 17 00:00:00 2001 From: xixirangrang Date: Mon, 24 Feb 2025 16:32:43 +0800 Subject: [PATCH 3/4] Apply suggestions from code review --- br/backup-and-restore-overview.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/br/backup-and-restore-overview.md b/br/backup-and-restore-overview.md index f98a7a60821bd..9151224060f28 100644 --- a/br/backup-and-restore-overview.md +++ b/br/backup-and-restore-overview.md @@ -145,7 +145,7 @@ This section introduces the BR compatibility information for all [Long-Term Supp > **Note:** > -> Known issue: Starting from version v7.2.0, fields of some system tables in newly created clusters become case-sensitive. However, for clusters that are **upgraded online** from versions earlier than v7.2.0 to v7.2.0 or later, the corresponding fields remain case-insensitive. Restore with system tables from backup taken from clusters with those case-insensitive fields to clusters with the case-sensitive fields or vise verse will fail. For more details, see [Issue #43717](https://github.com/pingcap/tidb/issues/43717). +> Known issue: Starting from version v7.2.0, fields of some system tables in newly created clusters become case-sensitive. However, for clusters that are **upgraded online** from versions earlier than v7.2.0 to v7.2.0 or later, the corresponding fields remain case-insensitive. Backup and restore operations involving system tables between these two types of clusters will fail. For more details, see [Issue #43717](https://github.com/pingcap/tidb/issues/43717). The following table lists the compatibility matrix for full backups. For clusters upgraded from a version prior to v7.2.0 to v7.2.0 or later, their behavior is consistent with that of backups from v7.1.0. From 3a322a345c37e7aca0310ca688915932675d6082 Mon Sep 17 00:00:00 2001 From: xixirangrang Date: Mon, 24 Feb 2025 17:03:18 +0800 Subject: [PATCH 4/4] Apply suggestions from code review --- br/backup-and-restore-overview.md | 1 - 1 file changed, 1 deletion(-) diff --git a/br/backup-and-restore-overview.md b/br/backup-and-restore-overview.md index 6627bb01a9eb4..9151224060f28 100644 --- a/br/backup-and-restore-overview.md +++ b/br/backup-and-restore-overview.md @@ -149,7 +149,6 @@ This section introduces the BR compatibility information for all [Long-Term Supp The following table lists the compatibility matrix for full backups. For clusters upgraded from a version prior to v7.2.0 to v7.2.0 or later, their behavior is consistent with that of backups from v7.1.0. - | Backup version | Compatible restore versions | Incompatible restore versions | |:---------|:----------------|:------------------| | v6.5.0 | 7.1.0 | v7.5.0 and later |