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config,variable: add new SEM configuration document

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

translation/from-docsThis PR is translated from a PR in pingcap/docs.This PR is translated from a PR in pingcap/docs.

v9.0-beta.2This PR/issue applies to TiDB v9.0-beta.2.This PR/issue applies to TiDB v9.0-beta.2.

v9.0-beta.3This PR/issue applies to TiDB v9.0-beta.3.This PR/issue applies to TiDB v9.0-beta.3.

Status: Open (in progress).

pingcap/docs-cnnumber 20751

#20751 In pingcap/docs-cn;

· YangKeao opened on Aug 11, 2025

v7.5.7: add release notes

do-not-merge/holdIndicates that a PR should not merge because someone has issued a /hold command.Indicates that a PR should not merge because someone has issued a /hold command.

needs-cherry-pick-release-7.5Should cherry pick this PR to release-7.5 branch.Should cherry pick this PR to release-7.5 branch.

needs-cherry-pick-release-8.1Should cherry pick this PR to release-8.1 branch.Should cherry pick this PR to release-8.1 branch.

needs-cherry-pick-release-8.5Should cherry pick this PR to release-8.5 branch.Should cherry pick this PR to release-8.5 branch.

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

translation/doingThis PR’s assignee is translating this PR.This PR’s assignee is translating this PR.

Status: Open (in progress).

pingcap/docs-cnnumber 20705

#20705 In pingcap/docs-cn;

· Oreoxmt opened on Jul 25, 2025

best practices: multi-column index optimization

area/best-practicesAdds or updates TiDB best practices.Adds or updates TiDB best practices.

needs-cherry-pick-release-8.5Should cherry pick this PR to release-8.5 branch.Should cherry pick this PR to release-8.5 branch.

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

translation/from-docsThis PR is translated from a PR in pingcap/docs.This PR is translated from a PR in pingcap/docs.

Status: Open (in progress).

pingcap/docs-cnnumber 20557

#20557 In pingcap/docs-cn;

· hfxsd opened on Jun 25, 2025

v9.0.0 release notes: add new features (v9.0-beta.2)

do-not-merge/holdIndicates that a PR should not merge because someone has issued a /hold command.Indicates that a PR should not merge because someone has issued a /hold command.

needs-1-more-lgtmIndicates a PR needs 1 more LGTM.Indicates a PR needs 1 more LGTM.

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

translation/doingThis PR’s assignee is translating this PR.This PR’s assignee is translating this PR.

v9.0-beta.2This PR/issue applies to TiDB v9.0-beta.2.This PR/issue applies to TiDB v9.0-beta.2.

Status: Open (in progress).

pingcap/docs-cnnumber 20468

#20468 In pingcap/docs-cn;

· Oreoxmt opened on Jun 5, 2025

Update tiflash system tables

missing-translation-statusThis PR does not have translation status info.This PR does not have translation status info.

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

Status: Open (in progress).

pingcap/docs-cnnumber 20253

#20253 In pingcap/docs-cn;

· JaySon-Huang opened on Apr 23, 2025

ticdc: add description about ticdc new architecture

area/ticdcIndicates that the Issue or PR belongs to the area of TiCDC.Indicates that the Issue or PR belongs to the area of TiCDC.

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size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

translation/doneThis PR has been translated from English into Chinese and updated to pingcap/docs-cn in a PR.This PR has been translated from English into Chinese and updated to pingcap/docs-cn in a PR.

v9.0-beta.1This PR/issue applies to TiDB v9.0-beta.1.This PR/issue applies to TiDB v9.0-beta.1.

Status: Open (in progress).

pingcap/docs-cnnumber 19765

#19765 In pingcap/docs-cn;

· lidezhu opened on Feb 10, 2025

distribute-table: support to scatter the region distribution of the given table and engine

approved

do-not-merge/holdIndicates that a PR should not merge because someone has issued a /hold command.Indicates that a PR should not merge because someone has issued a /hold command.

lgtm

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

translation/doneThis PR has been translated from English into Chinese and updated to pingcap/docs-cn in a PR.This PR has been translated from English into Chinese and updated to pingcap/docs-cn in a PR.

v9.0-beta.2This PR/issue applies to TiDB v9.0-beta.2.This PR/issue applies to TiDB v9.0-beta.2.

Status: Open (in progress).

pingcap/docs-cnnumber 19534

#19534 In pingcap/docs-cn;

· bufferflies opened on Jan 13, 2025

tidb: add description about GB18030

do-not-merge/holdIndicates that a PR should not merge because someone has issued a /hold command.Indicates that a PR should not merge because someone has issued a /hold command.

needs-1-more-lgtmIndicates a PR needs 1 more LGTM.Indicates a PR needs 1 more LGTM.

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

translation/doingThis PR’s assignee is translating this PR.This PR’s assignee is translating this PR.

v9.0-beta.2This PR/issue applies to TiDB v9.0-beta.2.This PR/issue applies to TiDB v9.0-beta.2.

Status: Open (in progress).

pingcap/docs-cnnumber 18662

#18662 In pingcap/docs-cn;

· CbcWestwolf opened on Sep 19, 2024

tiup: use tiup to rollback tidb

do-not-merge/holdIndicates that a PR should not merge because someone has issued a /hold command.Indicates that a PR should not merge because someone has issued a /hold command.

needs-cherry-pick-release-7.5Should cherry pick this PR to release-7.5 branch.Should cherry pick this PR to release-7.5 branch.

needs-cherry-pick-release-8.1Should cherry pick this PR to release-8.1 branch.Should cherry pick this PR to release-8.1 branch.

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

translation/doingThis PR’s assignee is translating this PR.This PR’s assignee is translating this PR.

Status: Open (in progress).

pingcap/docs-cnnumber 18077

#18077 In pingcap/docs-cn;

· hfxsd opened on Jul 23, 2024

sql-statement: update sql-statement-change-column

area/sql-infraIndicates that the Issue or PR belongs to the area of sql-infra and sql-metadata.Indicates that the Issue or PR belongs to the area of sql-infra and sql-metadata.

needs-cherry-pick-release-6.1Should cherry pick this PR to release-6.1 branch.Should cherry pick this PR to release-6.1 branch.

needs-cherry-pick-release-6.5Should cherry pick this PR to release-6.5 branch.Should cherry pick this PR to release-6.5 branch.

needs-cherry-pick-release-7.1Should cherry pick this PR to release-7.1 branch.Should cherry pick this PR to release-7.1 branch.

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requires-version-specific-changesAfter cherry-picked, the cherry-picked PR requires further changes.After cherry-picked, the cherry-picked PR requires further changes.

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

status/LGT2Indicates that a PR has LGTM 2.Indicates that a PR has LGTM 2.

translation/doingThis PR’s assignee is translating this PR.This PR’s assignee is translating this PR.

type/enhancementThe issue or PR belongs to an enhancement.The issue or PR belongs to an enhancement.

Status: Open (in progress).

pingcap/docs-cnnumber 13817

#13817 In pingcap/docs-cn;

· HuSharp opened on Apr 26, 2023

doc: add witness related docs

area/schedulingIndicates that the Issue or PR belongs to the area of scheduling.Indicates that the Issue or PR belongs to the area of scheduling.

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for-future-releaseThis PR only applies to master for now and might cherry-pick to a future release.This PR only applies to master for now and might cherry-pick to a future release.

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

status/LGT2Indicates that a PR has LGTM 2.Indicates that a PR has LGTM 2.

translation/doneThis PR has been translated from English into Chinese and updated to pingcap/docs-cn in a PR.This PR has been translated from English into Chinese and updated to pingcap/docs-cn in a PR.

type/compatibility-or-feature-changeThis PR involves compatibility changes or feature behavior changes.This PR involves compatibility changes or feature behavior changes.

Status: Draft (not ready).

pingcap/docs-cnnumber 12628

#12628 In pingcap/docs-cn;

· ethercflow opened on Jan 10, 2023

Integrate with Amazon AppFlow - Chinese Edition

area/developThis PR relates to the area of TiDB App development.This PR relates to the area of TiDB App development.

needs-cherry-pick-release-6.1Should cherry pick this PR to release-6.1 branch.Should cherry pick this PR to release-6.1 branch.

needs-cherry-pick-release-6.5Should cherry pick this PR to release-6.5 branch.Should cherry pick this PR to release-6.5 branch.

needs-rebaseIndicates a PR cannot be merged because it has merge conflicts with HEAD.Indicates a PR cannot be merged because it has merge conflicts with HEAD.

size/LDenotes a PR that changes 100-499 lines, ignoring generated files.Denotes a PR that changes 100-499 lines, ignoring generated files.

translation/from-docsThis PR is translated from a PR in pingcap/docs.This PR is translated from a PR in pingcap/docs.

Status: Open (in progress).

pingcap/docs-cnnumber 12555

#12555 In pingcap/docs-cn;

· Icemap opened on Jan 3, 2023