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[WIP]: add v8.5.5 release notes #21195

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@qiancai qiancai commented Dec 16, 2025

What is changed, added or deleted? (Required)

As in the title, this PR adds the release note doc for v8.5.5.

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

Tips for choosing the affected version(s):

By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.

For details, see tips for choosing the affected versions.

  • master (the latest development version)
  • v9.0 (TiDB 9.0 versions)
  • v8.5 (TiDB 8.5 versions)
  • v8.1 (TiDB 8.1 versions)
  • v7.5 (TiDB 7.5 versions)
  • v7.1 (TiDB 7.1 versions)
  • v6.5 (TiDB 6.5 versions)
  • v6.1 (TiDB 6.1 versions)
  • v5.4 (TiDB 5.4 versions)

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

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

@qiancai qiancai added do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. needs-cherry-pick-release-8.5 Should cherry pick this PR to release-8.5 branch. translation/from-docs This PR is translated from a PR in pingcap/docs. labels Dec 16, 2025
@ti-chi-bot ti-chi-bot bot added the size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. label Dec 16, 2025
@ti-chi-bot ti-chi-bot bot added size/L Denotes a PR that changes 100-499 lines, ignoring generated files. and removed size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Dec 16, 2025
@qiancai qiancai self-assigned this Dec 16, 2025
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ti-chi-bot bot commented Dec 17, 2025

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please ask for approval from qiancai. For more information see the Code Review Process.
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Frank945946
Frank945946 reviewed Dec 22, 2025
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zhaoshangzi
zhaoshangzi reviewed Dec 23, 2025
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@qiancai @zhaoshangzi @Frank945946
Add three features
a5f361c 
Co-authored-by: zhaoshangzi <zhaoshangzi@icloud.com>
Co-authored-by: Frank945946 <108602632+Frank945946@users.noreply.github.com>
joechenrh
joechenrh approved these changes Dec 23, 2025
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@joechenrh joechenrh left a comment •
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LGTM, for the ADD INDEX part.

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@joechenrh: adding LGTM is restricted to approvers and reviewers in OWNERS files.

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qiancai
qiancai commented Dec 24, 2025
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releases/release-8.5.5.md

更多信息，请参考[用户文档](链接)。

* 按时间点恢复 (Point-in-time recovery, PITR) 支持从压缩后的日志备份中恢复，以加快恢复速度 [#56522](https://github.com/pingcap/tidb/issues/56522) @[YuJuncen](https://github.com/YuJuncen) **tw@lilin90** <!--2001-->
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@qiancai qiancai Dec 24, 2025 •
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这条的中文目前是从 v9.0.0 复制过来的之前的描述，麻烦请按照 https://github.com/pingcap/docs/pull/22190/files 里最新的英文进行调整 @lilin90

qiancai
qiancai commented Dec 24, 2025
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releases/release-8.5.5.md

更多信息，请参考[用户文档](https://docs.pingcap.com/zh/tidb/v8.5/tikv-configuration-file#graceful-shutdown-timeout-从-v855-版本开始引入)。

* 提升进行中的日志备份与快照恢复的兼容性 [#58685](https://github.com/pingcap/tidb/issues/58685) @[BornChanger](https://github.com/BornChanger) **tw@lilin90** <!--2000-->
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@qiancai qiancai Dec 24, 2025 •
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这条的中文目前是从 v9.0.0 复制过来的之前的描述，麻烦请按照 https://github.com/pingcap/docs/pull/22190/files 里最新的英文进行调整 @lilin90

@ti-chi-bot ti-chi-bot bot added size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. and removed size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Dec 24, 2025
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@qiancai: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

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@Frank945946 Frank945946 Frank945946 left review comments

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@zhaoshangzi zhaoshangzi zhaoshangzi left review comments

@joechenrh joechenrh joechenrh approved these changes

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do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. needs-cherry-pick-release-8.5 Should cherry pick this PR to release-8.5 branch. size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. translation/from-docs This PR is translated from a PR in pingcap/docs.

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