From b11a9573bc3d5faba31ba31efd5d8bf642b808d0 Mon Sep 17 00:00:00 2001 From: doc-claw-bot Date: Mon, 14 Sep 2026 02:02:32 +0000 Subject: [PATCH 01/14] docs: translate #23757 --- releases/release-7.5.8.md | 49 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 releases/release-7.5.8.md diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md new file mode 100644 index 000000000000..2bb505f54a0a --- /dev/null +++ b/releases/release-7.5.8.md @@ -0,0 +1,49 @@ +--- +title: TiDB 7.5.8 Release Notes +summary: 了解 TiDB 7.5.8 的改进和错误修复。 +--- + +# TiDB 7.5.8 Release Notes + +发版日期：待定 + +TiDB 版本：7.5.8 + +试用链接：[快速体验](https://docs.pingcap.com/zh/tidb/v7.5/quick-start-with-tidb) | [生产部署](https://docs.pingcap.com/zh/tidb/v7.5/production-deployment-using-tiup) | [下载离线包](https://pingkai.cn/download#tidb-community) + +## 改进提升 + ++ PD + + - 为 `pd_cluster_status` 监控指标添加 `store` 标签，使 PD 能够按 store 维度上报状态指标，便于识别受影响的 TiKV store，并在需要时聚合整个集群的指标值 [#9855](https://github.com/tikv/pd/issues/9855) @[SerjKol80](https://github.com/SerjKol80) + +## 错误修复 + ++ TiDB + + - 修复由于 `UNION` 查询清理与 worker goroutine 之间的竞争，TiDB 可能因 `SIGSEGV` 崩溃的问题 [#66391](https://github.com/pingcap/tidb/issues/66391) @[bb7133](https://github.com/bb7133) + - 修复在某些场景下，由于代价高昂的全范围检查，TiDB 在查询规划期间消耗过多 CPU 的问题 [#63235](https://github.com/pingcap/tidb/issues/63235) @[terry1purcell](https://github.com/terry1purcell) @[qw4990](https://github.com/qw4990) + - 修复当 `tidb_opt_objective` 设置为 `determinate` 时，新添加索引在异步加载统计信息期间可能发生 panic 的问题 [#64274](https://github.com/pingcap/tidb/issues/64274) @[0xPoe](https://github.com/0xPoe) + ++ TiKV + + - 修复由于外部 SST 导入与前台写入之间存在竞争，TiKV 可能因 `txn record found but not expected` 发生 panic 的问题 [#19891](https://github.com/tikv/tikv/issues/19891) @[gengliqi](https://github.com/gengliqi) + - 修复停止日志备份任务后，BR 遗留过期的 GC service safepoint，可能导致 GC 无法按预期推进的问题 [#19832](https://github.com/tikv/tikv/issues/19832) @[Leavrth](https://github.com/Leavrth) + - 修复在 TiCDC 重启或网络故障后，TiKV 与 TiCDC 之间的陈旧连接可能无法被完全清理，导致 TiKV CDC 内存配额耗尽并使 changefeed 卡住的问题 [#18169](https://github.com/tikv/tikv/issues/18169) [#19610](https://github.com/tikv/tikv/issues/19610) @[asddongmen](https://github.com/asddongmen) @[wk989898](https://github.com/wk989898) + - 修复在 TiKV 发生 I/O 卡住时，由于与 PD 相关的工作被 I/O 操作阻塞，TiKV 吞吐量可能持续下降的问题 [#17939](https://github.com/tikv/tikv/issues/17939) @[LykxSassinator](https://github.com/LykxSassinator) + - 修复在 TiDB Lightning 导入数据期间，TiKV 可能因空指针解引用而崩溃的问题 [#18671](https://github.com/tikv/tikv/issues/18671) [#18756](https://github.com/tikv/tikv/issues/18756) @[Dog-Du](https://github.com/Dog-Du) + ++ PD + + - 修复在 TiDB Lightning 导入期间并发调用 `SetRegionLabelRule` 时，PD 可能出现 goroutine 激增并变得不稳定的问题 [#9854](https://github.com/tikv/pd/issues/9854) @[lhy1024](https://github.com/lhy1024) + ++ TiFlash + + - 修复执行移除列 `NOT NULL` 约束的 DDL 语句后，TiFlash 与 TiKV 之间可能出现数据不一致的问题 [#10680](https://github.com/pingcap/tiflash/issues/10680) @[JaySon-Huang](https://github.com/JaySon-Huang) + ++ 工具 + + + TiCDC + + - 修复 Kafka Changefeed 在重试失败的 DDL 或 checkpoint 事件投递时泄漏 Kafka client，导致内存持续增长的问题 [#12666](https://github.com/pingcap/tiflow/issues/12666) @[3AceShowHand](https://github.com/3AceShowHand) + - 修复当 admin 或 producer 初始化失败，或关闭 admin 与同步 producer 包装器时，Kafka sink 可能泄漏底层 Sarama client 的问题 [#12572](https://github.com/pingcap/tiflow/issues/12572) @[wlwilliamx](https://github.com/wlwilliamx) From 61695d539d1a486afd0958086dc388838e8caaee Mon Sep 17 00:00:00 2001 From: doc-claw-bot Date: Mon, 14 Sep 2026 02:15:15 +0000 Subject: [PATCH 02/14] docs: refine v7.5.8 release note wording --- releases/release-7.5.8.md | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md index 2bb505f54a0a..622c2bb68be9 100644 --- a/releases/release-7.5.8.md +++ b/releases/release-7.5.8.md @@ -21,16 +21,16 @@ TiDB 版本：7.5.8 + TiDB - - 修复由于 `UNION` 查询清理与 worker goroutine 之间的竞争，TiDB 可能因 `SIGSEGV` 崩溃的问题 [#66391](https://github.com/pingcap/tidb/issues/66391) @[bb7133](https://github.com/bb7133) - - 修复在某些场景下，由于代价高昂的全范围检查，TiDB 在查询规划期间消耗过多 CPU 的问题 [#63235](https://github.com/pingcap/tidb/issues/63235) @[terry1purcell](https://github.com/terry1purcell) @[qw4990](https://github.com/qw4990) - - 修复当 `tidb_opt_objective` 设置为 `determinate` 时，新添加索引在异步加载统计信息期间可能发生 panic 的问题 [#64274](https://github.com/pingcap/tidb/issues/64274) @[0xPoe](https://github.com/0xPoe) + - 修复由于 `UNION` 查询的清理过程与 worker goroutine 的退出过程之间存在竞争，TiDB 可能因 `SIGSEGV` 崩溃的问题 [#66391](https://github.com/pingcap/tidb/issues/66391) @[bb7133](https://github.com/bb7133) + - 修复在某些场景下，由于开销较大的全范围检查，TiDB 在查询规划期间消耗过多 CPU 的问题 [#63235](https://github.com/pingcap/tidb/issues/63235) @[terry1purcell](https://github.com/terry1purcell) @[qw4990](https://github.com/qw4990) + - 修复当 `tidb_opt_objective` 设置为 `determinate` 时，TiDB 在异步加载新添加索引的统计信息期间可能发生 panic 的问题 [#64274](https://github.com/pingcap/tidb/issues/64274) @[0xPoe](https://github.com/0xPoe) + TiKV - 修复由于外部 SST 导入与前台写入之间存在竞争，TiKV 可能因 `txn record found but not expected` 发生 panic 的问题 [#19891](https://github.com/tikv/tikv/issues/19891) @[gengliqi](https://github.com/gengliqi) - - 修复停止日志备份任务后，BR 遗留过期的 GC service safepoint，可能导致 GC 无法按预期推进的问题 [#19832](https://github.com/tikv/tikv/issues/19832) @[Leavrth](https://github.com/Leavrth) - - 修复在 TiCDC 重启或网络故障后，TiKV 与 TiCDC 之间的陈旧连接可能无法被完全清理，导致 TiKV CDC 内存配额耗尽并使 changefeed 卡住的问题 [#18169](https://github.com/tikv/tikv/issues/18169) [#19610](https://github.com/tikv/tikv/issues/19610) @[asddongmen](https://github.com/asddongmen) @[wk989898](https://github.com/wk989898) - - 修复在 TiKV 发生 I/O 卡住时，由于与 PD 相关的工作被 I/O 操作阻塞，TiKV 吞吐量可能持续下降的问题 [#17939](https://github.com/tikv/tikv/issues/17939) @[LykxSassinator](https://github.com/LykxSassinator) + - 修复停止日志备份任务后，BR 遗留不再需要的 GC service safepoint，可能导致 GC 无法按预期推进的问题 [#19832](https://github.com/tikv/tikv/issues/19832) @[Leavrth](https://github.com/Leavrth) + - 修复在 TiCDC 重启或网络故障后，TiKV 与 TiCDC 之间的残留连接可能无法被完全清理，导致 TiKV CDC 内存配额耗尽并使 Changefeed 卡住的问题 [#18169](https://github.com/tikv/tikv/issues/18169) [#19610](https://github.com/tikv/tikv/issues/19610) @[asddongmen](https://github.com/asddongmen) @[wk989898](https://github.com/wk989898) + - 修复在 TiKV 出现 I/O 阻塞时，由于与 PD 相关的工作被 I/O 操作阻塞，TiKV 吞吐量可能持续下降的问题 [#17939](https://github.com/tikv/tikv/issues/17939) @[LykxSassinator](https://github.com/LykxSassinator) - 修复在 TiDB Lightning 导入数据期间，TiKV 可能因空指针解引用而崩溃的问题 [#18671](https://github.com/tikv/tikv/issues/18671) [#18756](https://github.com/tikv/tikv/issues/18756) @[Dog-Du](https://github.com/Dog-Du) + PD @@ -45,5 +45,5 @@ TiDB 版本：7.5.8 + TiCDC - - 修复 Kafka Changefeed 在重试失败的 DDL 或 checkpoint 事件投递时泄漏 Kafka client，导致内存持续增长的问题 [#12666](https://github.com/pingcap/tiflow/issues/12666) @[3AceShowHand](https://github.com/3AceShowHand) - - 修复当 admin 或 producer 初始化失败，或关闭 admin 与同步 producer 包装器时，Kafka sink 可能泄漏底层 Sarama client 的问题 [#12572](https://github.com/pingcap/tiflow/issues/12572) @[wlwilliamx](https://github.com/wlwilliamx) + - 修复 Kafka Changefeed 在 DDL 或 checkpoint 事件投递失败后重试时泄漏 Kafka client，导致内存持续增长的问题 [#12666](https://github.com/pingcap/tiflow/issues/12666) @[3AceShowHand](https://github.com/3AceShowHand) + - 修复当 admin 或 producer 初始化失败，或关闭 admin 包装器或同步 producer 包装器时，Kafka sink 可能泄漏底层 Sarama client 的问题 [#12572](https://github.com/pingcap/tiflow/issues/12572) @[wlwilliamx](https://github.com/wlwilliamx) From 6be6bdf7211a496ed5ccdc5b22d1af9274015923 Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Mon, 14 Sep 2026 10:32:24 +0800 Subject: [PATCH 03/14] Update releases/release-7.5.8.md Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com> --- releases/release-7.5.8.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md index 622c2bb68be9..463ecc889cfe 100644 --- a/releases/release-7.5.8.md +++ b/releases/release-7.5.8.md @@ -28,7 +28,7 @@ TiDB 版本：7.5.8 + TiKV - 修复由于外部 SST 导入与前台写入之间存在竞争，TiKV 可能因 `txn record found but not expected` 发生 panic 的问题 [#19891](https://github.com/tikv/tikv/issues/19891) @[gengliqi](https://github.com/gengliqi) - - 修复停止日志备份任务后，BR 遗留不再需要的 GC service safepoint，可能导致 GC 无法按预期推进的问题 [#19832](https://github.com/tikv/tikv/issues/19832) @[Leavrth](https://github.com/Leavrth) + - 修复停止日志备份任务后，BR 遗留了不再需要的 GC service safepoint，可能导致 GC 无法按预期推进的问题 [#19832](https://github.com/tikv/tikv/issues/19832) @[Leavrth](https://github.com/Leavrth) - 修复在 TiCDC 重启或网络故障后，TiKV 与 TiCDC 之间的残留连接可能无法被完全清理，导致 TiKV CDC 内存配额耗尽并使 Changefeed 卡住的问题 [#18169](https://github.com/tikv/tikv/issues/18169) [#19610](https://github.com/tikv/tikv/issues/19610) @[asddongmen](https://github.com/asddongmen) @[wk989898](https://github.com/wk989898) - 修复在 TiKV 出现 I/O 阻塞时，由于与 PD 相关的工作被 I/O 操作阻塞，TiKV 吞吐量可能持续下降的问题 [#17939](https://github.com/tikv/tikv/issues/17939) @[LykxSassinator](https://github.com/LykxSassinator) - 修复在 TiDB Lightning 导入数据期间，TiKV 可能因空指针解引用而崩溃的问题 [#18671](https://github.com/tikv/tikv/issues/18671) [#18756](https://github.com/tikv/tikv/issues/18756) @[Dog-Du](https://github.com/Dog-Du) From 52c6333c830b5089ca44a6068e1ef16e8e5dd8f4 Mon Sep 17 00:00:00 2001 From: doc-claw-bot Date: Tue, 15 Sep 2026 09:30:30 +0000 Subject: [PATCH 04/14] docs: add v7.5.8 release metadata --- TOC-tidb-releases.md | 1 + releases/_index.md | 1 + releases/release-7.5.8.md | 2 +- releases/release-timeline.md | 1 + 4 files changed, 4 insertions(+), 1 deletion(-) diff --git a/TOC-tidb-releases.md b/TOC-tidb-releases.md index bcb0ff5dfb1b..4a5754904898 100644 --- a/TOC-tidb-releases.md +++ b/TOC-tidb-releases.md @@ -36,6 +36,7 @@ - v7.6 - [7.6.0-DMR](/releases/release-7.6.0.md) - v7.5 + - [7.5.8](/releases/release-7.5.8.md) - [7.5.7](/releases/release-7.5.7.md) - [7.5.6](/releases/release-7.5.6.md) - [7.5.5](/releases/release-7.5.5.md) diff --git a/releases/_index.md b/releases/_index.md index 8ef1ef2b72da..472a8946c3af 100644 --- a/releases/_index.md +++ b/releases/_index.md @@ -52,6 +52,7 @@ aliases: ['/zh/tidb/stable/release-notes/','/zh/tidb/v8.5/release-notes/','/docs ## 7.5 +- [7.5.8](/releases/release-7.5.8.md): 2026-09-15 - [7.5.7](/releases/release-7.5.7.md): 2025-09-04 - [7.5.6](/releases/release-7.5.6.md): 2025-03-14 - [7.5.5](/releases/release-7.5.5.md): 2024-12-31 diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md index 463ecc889cfe..fbb6395449bd 100644 --- a/releases/release-7.5.8.md +++ b/releases/release-7.5.8.md @@ -5,7 +5,7 @@ summary: 了解 TiDB 7.5.8 的改进和错误修复。 # TiDB 7.5.8 Release Notes -发版日期：待定 +发版日期：2026 年 9 月 15 日 TiDB 版本：7.5.8 diff --git a/releases/release-timeline.md b/releases/release-timeline.md index 70dc51211f5d..71106a2d416a 100644 --- a/releases/release-timeline.md +++ b/releases/release-timeline.md @@ -18,6 +18,7 @@ summary: 了解 TiDB 的版本发布时间线。 | [8.5.6](/releases/release-8.5.6.md) | 2026-04-14 | | [8.5.5](/releases/release-8.5.5.md) | 2026-01-15 | | [8.5.4](/releases/release-8.5.4.md) | 2025-11-27 | +| [7.5.8](/releases/release-7.5.8.md) | 2026-09-15 | | [7.5.7](/releases/release-7.5.7.md) | 2025-09-04 | | [8.5.3](/releases/release-8.5.3.md) | 2025-08-14 | | [8.5.2](/releases/release-8.5.2.md) | 2025-06-12 | From bc7f9f4284d649687297fce856082ad9d53ddc5d Mon Sep 17 00:00:00 2001 From: doc-claw-bot Date: Tue, 15 Sep 2026 09:36:58 +0000 Subject: [PATCH 05/14] docs-cn: change v7.5.8 release date to 2026-09-17 --- releases/_index.md | 2 +- releases/release-7.5.8.md | 2 +- releases/release-timeline.md | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/releases/_index.md b/releases/_index.md index 472a8946c3af..067505d633c7 100644 --- a/releases/_index.md +++ b/releases/_index.md @@ -52,7 +52,7 @@ aliases: ['/zh/tidb/stable/release-notes/','/zh/tidb/v8.5/release-notes/','/docs ## 7.5 -- [7.5.8](/releases/release-7.5.8.md): 2026-09-15 +- [7.5.8](/releases/release-7.5.8.md): 2026-09-17 - [7.5.7](/releases/release-7.5.7.md): 2025-09-04 - [7.5.6](/releases/release-7.5.6.md): 2025-03-14 - [7.5.5](/releases/release-7.5.5.md): 2024-12-31 diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md index fbb6395449bd..798dc20186d1 100644 --- a/releases/release-7.5.8.md +++ b/releases/release-7.5.8.md @@ -5,7 +5,7 @@ summary: 了解 TiDB 7.5.8 的改进和错误修复。 # TiDB 7.5.8 Release Notes -发版日期：2026 年 9 月 15 日 +发版日期：2026 年 9 月 17 日 TiDB 版本：7.5.8 diff --git a/releases/release-timeline.md b/releases/release-timeline.md index 71106a2d416a..83af8a1e7fc3 100644 --- a/releases/release-timeline.md +++ b/releases/release-timeline.md @@ -18,7 +18,7 @@ summary: 了解 TiDB 的版本发布时间线。 | [8.5.6](/releases/release-8.5.6.md) | 2026-04-14 | | [8.5.5](/releases/release-8.5.5.md) | 2026-01-15 | | [8.5.4](/releases/release-8.5.4.md) | 2025-11-27 | -| [7.5.8](/releases/release-7.5.8.md) | 2026-09-15 | +| [7.5.8](/releases/release-7.5.8.md) | 2026-09-17 | | [7.5.7](/releases/release-7.5.7.md) | 2025-09-04 | | [8.5.3](/releases/release-8.5.3.md) | 2025-08-14 | | [8.5.2](/releases/release-8.5.2.md) | 2025-06-12 | From cafec416df1f0d54f44a54709953cfaa7cc52db6 Mon Sep 17 00:00:00 2001 From: doc-claw-bot Date: Wed, 16 Sep 2026 01:40:59 +0000 Subject: [PATCH 06/14] docs-zh: sync PD stale metrics bug fix for v7.5.8 release notes --- releases/release-7.5.8.md | 1 + 1 file changed, 1 insertion(+) diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md index 798dc20186d1..e9002af75f78 100644 --- a/releases/release-7.5.8.md +++ b/releases/release-7.5.8.md @@ -36,6 +36,7 @@ TiDB 版本：7.5.8 + PD - 修复在 TiDB Lightning 导入期间并发调用 `SetRegionLabelRule` 时，PD 可能出现 goroutine 激增并变得不稳定的问题 [#9854](https://github.com/tikv/pd/issues/9854) @[lhy1024](https://github.com/lhy1024) + - 修复 scale-in 后已删除 store 的 `pd_cluster_status` 监控指标仍然残留，导致这些 store 仍出现在集群状态指标中的问题 [#9942](https://github.com/tikv/pd/issues/9942) @[okJiang](https://github.com/okJiang) + TiFlash From 025171e9783d849caec5eff47cbf03ec064f5003 Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Wed, 16 Sep 2026 10:00:38 +0800 Subject: [PATCH 07/14] Update releases/release-7.5.8.md --- releases/release-7.5.8.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md index e9002af75f78..60b1f66ab438 100644 --- a/releases/release-7.5.8.md +++ b/releases/release-7.5.8.md @@ -36,7 +36,7 @@ TiDB 版本：7.5.8 + PD - 修复在 TiDB Lightning 导入期间并发调用 `SetRegionLabelRule` 时，PD 可能出现 goroutine 激增并变得不稳定的问题 [#9854](https://github.com/tikv/pd/issues/9854) @[lhy1024](https://github.com/lhy1024) - - 修复 scale-in 后已删除 store 的 `pd_cluster_status` 监控指标仍然残留，导致这些 store 仍出现在集群状态指标中的问题 [#9942](https://github.com/tikv/pd/issues/9942) @[okJiang](https://github.com/okJiang) + - 修复 TiKV 缩容后已删除 store 的 `pd_cluster_status` 监控指标仍然残留，导致这些 store 仍出现在集群状态指标中的问题 [#9942](https://github.com/tikv/pd/issues/9942) @[okJiang](https://github.com/okJiang) + TiFlash From 12f4eea13973f22957d76b66e61ef2b70a8a9c5e Mon Sep 17 00:00:00 2001 From: qiancai Date: Wed, 16 Sep 2026 10:44:24 +0800 Subject: [PATCH 08/14] Update release-7.5.7.md --- releases/release-7.5.7.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 23d62f2a8296..c3814cf2741d 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -9,7 +9,7 @@ summary: 了解 TiDB 7.5.7 版本的兼容性变更、改进提升，以及错 TiDB 版本：7.5.7 -试用链接：[快速体验](https://docs.pingcap.com/zh/tidb/v7.5/quick-start-with-tidb) | [生产部署](https://docs.pingcap.com/zh/tidb/v7.5/production-deployment-using-tiup) | [下载离线包](https://pingkai.cn/download#tidb-community) +试用链接：[快速体验](https://docs.pingcap.com/zh/tidb/v7.5/quick-start-with-tidb) | [生产部署](https://docs.pingcap.com/zh/tidb/v7.5/production-deployment-using-tiup) ## 兼容性变更 From 4a6714ce360c9047d746983d49b7560b11a8651b Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Wed, 16 Sep 2026 18:00:56 +0800 Subject: [PATCH 09/14] move #19832 to the BR part Co-authored-by: Juncen Yu --- releases/release-7.5.8.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md index 60b1f66ab438..3677b38cc16d 100644 --- a/releases/release-7.5.8.md +++ b/releases/release-7.5.8.md @@ -28,7 +28,6 @@ TiDB 版本：7.5.8 + TiKV - 修复由于外部 SST 导入与前台写入之间存在竞争，TiKV 可能因 `txn record found but not expected` 发生 panic 的问题 [#19891](https://github.com/tikv/tikv/issues/19891) @[gengliqi](https://github.com/gengliqi) - - 修复停止日志备份任务后，BR 遗留了不再需要的 GC service safepoint，可能导致 GC 无法按预期推进的问题 [#19832](https://github.com/tikv/tikv/issues/19832) @[Leavrth](https://github.com/Leavrth) - 修复在 TiCDC 重启或网络故障后，TiKV 与 TiCDC 之间的残留连接可能无法被完全清理，导致 TiKV CDC 内存配额耗尽并使 Changefeed 卡住的问题 [#18169](https://github.com/tikv/tikv/issues/18169) [#19610](https://github.com/tikv/tikv/issues/19610) @[asddongmen](https://github.com/asddongmen) @[wk989898](https://github.com/wk989898) - 修复在 TiKV 出现 I/O 阻塞时，由于与 PD 相关的工作被 I/O 操作阻塞，TiKV 吞吐量可能持续下降的问题 [#17939](https://github.com/tikv/tikv/issues/17939) @[LykxSassinator](https://github.com/LykxSassinator) - 修复在 TiDB Lightning 导入数据期间，TiKV 可能因空指针解引用而崩溃的问题 [#18671](https://github.com/tikv/tikv/issues/18671) [#18756](https://github.com/tikv/tikv/issues/18756) @[Dog-Du](https://github.com/Dog-Du) @@ -44,6 +43,10 @@ TiDB 版本：7.5.8 + 工具 + + BR + + - 修复停止日志备份任务后，BR 遗留了不再需要的 GC service safepoint，可能导致 GC 无法按预期推进的问题 [#19832](https://github.com/tikv/tikv/issues/19832) @[Leavrth](https://github.com/Leavrth) + + TiCDC - 修复 Kafka Changefeed 在 DDL 或 checkpoint 事件投递失败后重试时泄漏 Kafka client，导致内存持续增长的问题 [#12666](https://github.com/pingcap/tiflow/issues/12666) @[3AceShowHand](https://github.com/3AceShowHand) From c90faad3d26d8456cc46027a703d48bc359c71da Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Wed, 16 Sep 2026 18:01:27 +0800 Subject: [PATCH 10/14] Update releases/release-7.5.8.md Co-authored-by: Hitachi --- releases/release-7.5.8.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md index 3677b38cc16d..835869d93f5a 100644 --- a/releases/release-7.5.8.md +++ b/releases/release-7.5.8.md @@ -35,7 +35,7 @@ TiDB 版本：7.5.8 + PD - 修复在 TiDB Lightning 导入期间并发调用 `SetRegionLabelRule` 时，PD 可能出现 goroutine 激增并变得不稳定的问题 [#9854](https://github.com/tikv/pd/issues/9854) @[lhy1024](https://github.com/lhy1024) - - 修复 TiKV 缩容后已删除 store 的 `pd_cluster_status` 监控指标仍然残留，导致这些 store 仍出现在集群状态指标中的问题 [#9942](https://github.com/tikv/pd/issues/9942) @[okJiang](https://github.com/okJiang) + - 修复 TiKV 缩容后，已删除 store 的 `pd_cluster_status` 监控指标仍然残留的问题 [#9942](https://github.com/tikv/pd/issues/9942) @[okJiang](https://github.com/okJiang) + TiFlash From bfe0bc459fb6f216eea99d95beb225677b63ce8a Mon Sep 17 00:00:00 2001 From: doc-claw-bot Date: Wed, 16 Sep 2026 10:15:19 +0000 Subject: [PATCH 11/14] docs-cn: remove component comments from v7.5.8 release notes --- releases/release-7.5.8.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md index 835869d93f5a..a8c1bb1c17ea 100644 --- a/releases/release-7.5.8.md +++ b/releases/release-7.5.8.md @@ -35,7 +35,7 @@ TiDB 版本：7.5.8 + PD - 修复在 TiDB Lightning 导入期间并发调用 `SetRegionLabelRule` 时，PD 可能出现 goroutine 激增并变得不稳定的问题 [#9854](https://github.com/tikv/pd/issues/9854) @[lhy1024](https://github.com/lhy1024) - - 修复 TiKV 缩容后，已删除 store 的 `pd_cluster_status` 监控指标仍然残留的问题 [#9942](https://github.com/tikv/pd/issues/9942) @[okJiang](https://github.com/okJiang) + - 修复 TiKV 缩容后，已删除 store 的 `pd_cluster_status` 监控指标仍然残留的问题 [#9942](https://github.com/tikv/pd/issues/9942) @[okJiang](https://github.com/okJiang) + TiFlash @@ -45,7 +45,7 @@ TiDB 版本：7.5.8 + BR - - 修复停止日志备份任务后，BR 遗留了不再需要的 GC service safepoint，可能导致 GC 无法按预期推进的问题 [#19832](https://github.com/tikv/tikv/issues/19832) @[Leavrth](https://github.com/Leavrth) + - 修复停止日志备份任务后，BR 遗留了不再需要的 GC service safepoint，可能导致 GC 无法按预期推进的问题 [#19832](https://github.com/tikv/tikv/issues/19832) @[Leavrth](https://github.com/Leavrth) + TiCDC From f62554383b24aa28911cb8e0e0b77d0b00817a93 Mon Sep 17 00:00:00 2001 From: doc-claw-bot Date: Wed, 16 Sep 2026 10:27:03 +0000 Subject: [PATCH 12/14] docs-cn: remove all component comments from v7.5.8 release notes --- releases/release-7.5.8.md | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/releases/release-7.5.8.md b/releases/release-7.5.8.md index a8c1bb1c17ea..4b5e1bb08b71 100644 --- a/releases/release-7.5.8.md +++ b/releases/release-7.5.8.md @@ -15,31 +15,31 @@ TiDB 版本：7.5.8 + PD - - 为 `pd_cluster_status` 监控指标添加 `store` 标签，使 PD 能够按 store 维度上报状态指标，便于识别受影响的 TiKV store，并在需要时聚合整个集群的指标值 [#9855](https://github.com/tikv/pd/issues/9855) @[SerjKol80](https://github.com/SerjKol80) + - 为 `pd_cluster_status` 监控指标添加 `store` 标签，使 PD 能够按 store 维度上报状态指标，便于识别受影响的 TiKV store，并在需要时聚合整个集群的指标值 [#9855](https://github.com/tikv/pd/issues/9855) @[SerjKol80](https://github.com/SerjKol80) ## 错误修复 + TiDB - - 修复由于 `UNION` 查询的清理过程与 worker goroutine 的退出过程之间存在竞争，TiDB 可能因 `SIGSEGV` 崩溃的问题 [#66391](https://github.com/pingcap/tidb/issues/66391) @[bb7133](https://github.com/bb7133) - - 修复在某些场景下，由于开销较大的全范围检查，TiDB 在查询规划期间消耗过多 CPU 的问题 [#63235](https://github.com/pingcap/tidb/issues/63235) @[terry1purcell](https://github.com/terry1purcell) @[qw4990](https://github.com/qw4990) - - 修复当 `tidb_opt_objective` 设置为 `determinate` 时，TiDB 在异步加载新添加索引的统计信息期间可能发生 panic 的问题 [#64274](https://github.com/pingcap/tidb/issues/64274) @[0xPoe](https://github.com/0xPoe) + - 修复由于 `UNION` 查询的清理过程与 worker goroutine 的退出过程之间存在竞争，TiDB 可能因 `SIGSEGV` 崩溃的问题 [#66391](https://github.com/pingcap/tidb/issues/66391) @[bb7133](https://github.com/bb7133) + - 修复在某些场景下，由于开销较大的全范围检查，TiDB 在查询规划期间消耗过多 CPU 的问题 [#63235](https://github.com/pingcap/tidb/issues/63235) @[terry1purcell](https://github.com/terry1purcell) @[qw4990](https://github.com/qw4990) + - 修复当 `tidb_opt_objective` 设置为 `determinate` 时，TiDB 在异步加载新添加索引的统计信息期间可能发生 panic 的问题 [#64274](https://github.com/pingcap/tidb/issues/64274) @[0xPoe](https://github.com/0xPoe) + TiKV - - 修复由于外部 SST 导入与前台写入之间存在竞争，TiKV 可能因 `txn record found but not expected` 发生 panic 的问题 [#19891](https://github.com/tikv/tikv/issues/19891) @[gengliqi](https://github.com/gengliqi) - - 修复在 TiCDC 重启或网络故障后，TiKV 与 TiCDC 之间的残留连接可能无法被完全清理，导致 TiKV CDC 内存配额耗尽并使 Changefeed 卡住的问题 [#18169](https://github.com/tikv/tikv/issues/18169) [#19610](https://github.com/tikv/tikv/issues/19610) @[asddongmen](https://github.com/asddongmen) @[wk989898](https://github.com/wk989898) - - 修复在 TiKV 出现 I/O 阻塞时，由于与 PD 相关的工作被 I/O 操作阻塞，TiKV 吞吐量可能持续下降的问题 [#17939](https://github.com/tikv/tikv/issues/17939) @[LykxSassinator](https://github.com/LykxSassinator) - - 修复在 TiDB Lightning 导入数据期间，TiKV 可能因空指针解引用而崩溃的问题 [#18671](https://github.com/tikv/tikv/issues/18671) [#18756](https://github.com/tikv/tikv/issues/18756) @[Dog-Du](https://github.com/Dog-Du) + - 修复由于外部 SST 导入与前台写入之间存在竞争，TiKV 可能因 `txn record found but not expected` 发生 panic 的问题 [#19891](https://github.com/tikv/tikv/issues/19891) @[gengliqi](https://github.com/gengliqi) + - 修复在 TiCDC 重启或网络故障后，TiKV 与 TiCDC 之间的残留连接可能无法被完全清理，导致 TiKV CDC 内存配额耗尽并使 Changefeed 卡住的问题 [#18169](https://github.com/tikv/tikv/issues/18169) [#19610](https://github.com/tikv/tikv/issues/19610) @[asddongmen](https://github.com/asddongmen) @[wk989898](https://github.com/wk989898) + - 修复在 TiKV 出现 I/O 阻塞时，由于与 PD 相关的工作被 I/O 操作阻塞，TiKV 吞吐量可能持续下降的问题 [#17939](https://github.com/tikv/tikv/issues/17939) @[LykxSassinator](https://github.com/LykxSassinator) + - 修复在 TiDB Lightning 导入数据期间，TiKV 可能因空指针解引用而崩溃的问题 [#18671](https://github.com/tikv/tikv/issues/18671) [#18756](https://github.com/tikv/tikv/issues/18756) @[Dog-Du](https://github.com/Dog-Du) + PD - - 修复在 TiDB Lightning 导入期间并发调用 `SetRegionLabelRule` 时，PD 可能出现 goroutine 激增并变得不稳定的问题 [#9854](https://github.com/tikv/pd/issues/9854) @[lhy1024](https://github.com/lhy1024) + - 修复在 TiDB Lightning 导入期间并发调用 `SetRegionLabelRule` 时，PD 可能出现 goroutine 激增并变得不稳定的问题 [#9854](https://github.com/tikv/pd/issues/9854) @[lhy1024](https://github.com/lhy1024) - 修复 TiKV 缩容后，已删除 store 的 `pd_cluster_status` 监控指标仍然残留的问题 [#9942](https://github.com/tikv/pd/issues/9942) @[okJiang](https://github.com/okJiang) + TiFlash - - 修复执行移除列 `NOT NULL` 约束的 DDL 语句后，TiFlash 与 TiKV 之间可能出现数据不一致的问题 [#10680](https://github.com/pingcap/tiflash/issues/10680) @[JaySon-Huang](https://github.com/JaySon-Huang) + - 修复执行移除列 `NOT NULL` 约束的 DDL 语句后，TiFlash 与 TiKV 之间可能出现数据不一致的问题 [#10680](https://github.com/pingcap/tiflash/issues/10680) @[JaySon-Huang](https://github.com/JaySon-Huang) + 工具 @@ -49,5 +49,5 @@ TiDB 版本：7.5.8 + TiCDC - - 修复 Kafka Changefeed 在 DDL 或 checkpoint 事件投递失败后重试时泄漏 Kafka client，导致内存持续增长的问题 [#12666](https://github.com/pingcap/tiflow/issues/12666) @[3AceShowHand](https://github.com/3AceShowHand) - - 修复当 admin 或 producer 初始化失败，或关闭 admin 包装器或同步 producer 包装器时，Kafka sink 可能泄漏底层 Sarama client 的问题 [#12572](https://github.com/pingcap/tiflow/issues/12572) @[wlwilliamx](https://github.com/wlwilliamx) + - 修复 Kafka Changefeed 在 DDL 或 checkpoint 事件投递失败后重试时泄漏 Kafka client，导致内存持续增长的问题 [#12666](https://github.com/pingcap/tiflow/issues/12666) @[3AceShowHand](https://github.com/3AceShowHand) + - 修复当 admin 或 producer 初始化失败，或关闭 admin 包装器或同步 producer 包装器时，Kafka sink 可能泄漏底层 Sarama client 的问题 [#12572](https://github.com/pingcap/tiflow/issues/12572) @[wlwilliamx](https://github.com/wlwilliamx) From 0475c17e047f3b4e410a2cd53f84f64f111e7004 Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Thu, 17 Sep 2026 14:29:12 +0800 Subject: [PATCH 13/14] Update TOC-pingkai.md --- TOC-pingkai.md | 1 + 1 file changed, 1 insertion(+) diff --git a/TOC-pingkai.md b/TOC-pingkai.md index b15dbd230faf..18610bb6c354 100644 --- a/TOC-pingkai.md +++ b/TOC-pingkai.md @@ -1140,6 +1140,7 @@ - v7.6 - [7.6.0-DMR](/releases/release-7.6.0.md) - v7.5 + - [7.5.8](/releases/release-7.5.8.md) - [7.5.7](/releases/release-7.5.7.md) - [7.5.6](/releases/release-7.5.6.md) - [7.5.5](/releases/release-7.5.5.md) From bb4c18bd5f8172f3ad9d7641b52117cabd8b1d88 Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Sun, 20 Sep 2026 14:22:21 +0800 Subject: [PATCH 14/14] Update release-timeline.md --- releases/release-timeline.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/releases/release-timeline.md b/releases/release-timeline.md index 83af8a1e7fc3..2075558d813a 100644 --- a/releases/release-timeline.md +++ b/releases/release-timeline.md @@ -13,12 +13,12 @@ summary: 了解 TiDB 的版本发布时间线。 | 版本 | 发布日期 | | :--- | :--- | +| [7.5.8](/releases/release-7.5.8.md) | 2026-09-17 | | [8.5.8](/releases/release-8.5.8.md) | 2026-08-27 | | [8.5.7](/releases/release-8.5.7.md) | 2026-07-09 | | [8.5.6](/releases/release-8.5.6.md) | 2026-04-14 | | [8.5.5](/releases/release-8.5.5.md) | 2026-01-15 | | [8.5.4](/releases/release-8.5.4.md) | 2025-11-27 | -| [7.5.8](/releases/release-7.5.8.md) | 2026-09-17 | | [7.5.7](/releases/release-7.5.7.md) | 2025-09-04 | | [8.5.3](/releases/release-8.5.3.md) | 2025-08-14 | | [8.5.2](/releases/release-8.5.2.md) | 2025-06-12 |