add v7.5.8 release notes (#21930) by ti-chi-bot · Pull Request #21939 · pingcap/docs-cn

ti-chi-bot · 2026-09-17T06:46:21Z

This is an automated cherry-pick of #21930

What is changed, added or deleted? (Required)

Add releases/release-7.5.8.md for the TiDB 7.5.8 patch release notes.
Add the TiDB 7.5.8 entry to TOC-tidb-releases.md, releases/_index.md, and releases/release-timeline.md.
Fill in the TiDB 7.5.8 release date.
This release-notes update is prepared on release-8.5 because the release-notes directory is maintained there and will be cherry-picked to master.

Which TiDB version(s) do your changes apply to? (Required)

What is the related PR or file link(s)?

This PR is translated from: add v7.5.8 release notes docs#23757
Other reference link(s): generated from doc_4afdcdb19e49_release-7.5.8-updated-by-ai.md

AI agent involvement

The changes in this PR were primarily made by an AI agent on behalf of the PR author.

Do your changes match any of the following descriptions?

Delete files
Change aliases
Need modification after applied to another branch
Might cause conflicts after applied to another branch

Summary by CodeRabbit

新功能
- PD 的 pd_cluster_status 监控指标新增 store 标签。
问题修复
- 修复 TiDB、TiKV、PD、TiFlash、BR 和 TiCDC 中涉及崩溃、统计信息、连接残留、内存泄漏及监控指标残留等问题。
文档
- 新增 TiDB 7.5.8 发布说明，发布日期为 2026 年 9 月 17 日，并更新版本目录与发布时间线。
- 从 TiDB 7.5.7 发布说明中移除“下载离线包”链接。

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Co-authored-by: Juncen Yu <Yu745514916@live.com>

Co-authored-by: Hitachi <yhzhang00@outlook.com>

coderabbitai · 2026-09-17T06:47:00Z

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Reviewing files that changed from the base of the PR and between 0475c17 and bb4c18b.

📒 Files selected for processing (1)

releases/release-timeline.md

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📝 Walkthrough

Walkthrough

新增 TiDB 7.5.8 发布说明，记录 PD 监控指标改进及多个组件的错误修复。同时更新版本索引、目录、发布时间线，并调整 7.5.7 的试用链接。

Changes

TiDB 7.5.8 发布

Layer / File(s)	Summary
新增 7.5.8 发布说明 `releases/release-7.5.8.md`	新增 2026-09-17 发布的 TiDB 7.5.8 说明，包含 PD 监控指标改进，以及 TiDB、TiKV、PD、TiFlash、BR 和 TiCDC 的错误修复。
更新版本索引与导航 `TOC-pingkai.md`, `TOC-tidb-releases.md`, `releases/_index.md`, `releases/release-timeline.md`, `releases/release-7.5.7.md`	新增 7.5.8 的目录、版本列表和时间线记录，并从 7.5.7 试用链接中移除“下载离线包”。

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Other

Suggested reviewers: qiancai

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	标题明确说明新增 TiDB v7.5.8 发布说明，并包含关联 PR 编号。标题与变更内容一致且简洁。
Description check	✅ Passed	描述包含变更内容、适用版本、相关链接和 AI agent involvement 等必需信息，并说明了自动 cherry-pick 背景。内容与 PR 目标一致。
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

ℹ️ Review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 924e58f and 0475c17.

📒 Files selected for processing (6)

TOC-pingkai.md
TOC-tidb-releases.md
releases/_index.md
releases/release-7.5.7.md
releases/release-7.5.8.md
releases/release-timeline.md

Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review.

qiancai · 2026-09-20T06:23:04Z

/approve

ti-chi-bot · 2026-09-20T06:23:11Z

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiancai

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ti-chi-bot · 2026-09-21T07:27:38Z

In response to a cherrypick label: new pull request created to branch release-8.5: #21948.

doc-claw-bot and others added 13 commits September 17, 2026 06:46

docs: translate #23757

b11a957

docs: refine v7.5.8 release note wording

61695d5

Update releases/release-7.5.8.md

6be6bdf

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

docs: add v7.5.8 release metadata

52c6333

docs-cn: change v7.5.8 release date to 2026-09-17

bc7f9f4

docs-zh: sync PD stale metrics bug fix for v7.5.8 release notes

cafec41

Update releases/release-7.5.8.md

025171e

Update release-7.5.7.md

12f4eea

move pingcap#19832 to the BR part

4a6714c

Co-authored-by: Juncen Yu <Yu745514916@live.com>

Update releases/release-7.5.8.md

c90faad

Co-authored-by: Hitachi <yhzhang00@outlook.com>

docs-cn: remove component comments from v7.5.8 release notes

bfe0bc4

docs-cn: remove all component comments from v7.5.8 release notes

f625543

Update TOC-pingkai.md

0475c17

ti-chi-bot added contribution This PR is from a community contributor. lgtm size/M Denotes a PR that changes 30-99 lines, ignoring generated files. type/cherry-pick-for-master This PR is cherry-picked to master from a source PR. labels Sep 17, 2026

ti-chi-bot mentioned this pull request Sep 17, 2026

add v7.5.8 release notes #21930

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ti-chi-bot assigned doc-claw-bot Sep 17, 2026

coderabbitai Bot reviewed Sep 17, 2026

View reviewed changes

Comment thread releases/release-timeline.md Outdated

Update release-timeline.md

bb4c18b

qiancai approved these changes Sep 20, 2026

View reviewed changes

ti-chi-bot Bot added the approved label Sep 20, 2026

ti-chi-bot Bot merged commit 5e756fa into pingcap:master Sep 20, 2026
11 checks passed

ti-chi-bot Bot deleted the cherry-pick-21930-to-master branch September 20, 2026 06:47

qiancai added type/cherry-pick-for-release-8.5 This PR is cherry-picked to release-8.5 from a source PR. and removed type/cherry-pick-for-release-8.5 This PR is cherry-picked to release-8.5 from a source PR. labels Sep 21, 2026

qiancai added the needs-cherry-pick-release-8.5 Should cherry pick this PR to release-8.5 branch. label Sep 21, 2026

ti-chi-bot mentioned this pull request Sep 21, 2026

v7.5.8 release notes: update the timeline table #21948

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2 of 14 tasks

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add v7.5.8 release notes (#21930) - #21939

add v7.5.8 release notes (#21930)#21939
ti-chi-bot[bot] merged 14 commits into
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