docs: replace deprecated PingCAP domains

[wuhuizuo]

What problem does this PR solve?

Issue Number: close #67527

Problem Summary:

download.pingcap.org is being deprecated in favor of download.pingcap.com, but TiDB still has old-domain references in Dumpling install/docs and BR test download helpers on master.

What changed and how does it work?

• replace deprecated download.pingcap.org references with download.pingcap.com in br/tests/download_tools.sh, dumpling/README.md, and dumpling/install.sh
• keep existing paths and current master behavior unchanged

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Manual test steps:

• git diff --check
• verify no remaining old-domain references in br/tests/download_tools.sh, dumpling/README.md, and dumpling/install.sh
• curl -I https://download.pingcap.com/tiflash-nightly-linux-amd64.tar.gz
• curl -I https://download.pingcap.com/tidb-nightly-linux-amd64.tar.gz
• curl -I https://download.pingcap.com/ticdc-nightly-linux-amd64.tar.gz
• curl -I http://download.pingcap.com/tidb-enterprise-tools-latest-linux-amd64.tar.gz
• curl -I https://download.pingcap.com/tidb-master-linux-amd64.tar.gz
• curl -I https://download.pingcap.com/tidb-toolkit-latest-linux-amd64.tar.gz
• curl -I http://download.pingcap.com/tidb-toolkit-nightly-linux-amd64.tar.gz
• linked tracking issue #67527 is labeled type/compatibility

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

none

[pantheon-ai]

Review Complete

Findings: 0 issues
Posted: 0
Duplicates/Skipped: 0

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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Details

Needs approval from an approver in each of these files:

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[tiprow]

Hi @wuhuizuo. Thanks for your PR.

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[coderabbitai]

📝 Walkthrough

Walkthrough

Domain migration of download URLs for PingCAP nightly components across scripts and docs: download.pingcap.org → download.pingcap.com. No other logic or control flow changes.

Changes

Cohort / File(s)	Summary
BR download script br/tests/download_tools.sh	Replaced download domain from download.pingcap.org to download.pingcap.com for Tiflash, TiDB nightly bundle, and TiCDC; download/extract/move steps unchanged.
Dumpling installer dumpling/install.sh	Switched toolkit download URL domain to download.pingcap.com; output filename and extraction logic unchanged.
Dumpling README dumpling/README.md	Updated example/download URLs to download.pingcap.com for sync_diff_inspector, tidb-server, and tidb-lightning; removed trailing newline.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A Rabbit's Download Hop
From .org to .com I leap,
Gentle bytes no longer sleep,
Same carrots, new burrowed trail,
Fetch and extract — hop, don't fail! 🥕

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description check	✅ Passed	The PR description follows the repository template and includes all required sections: issue number linked to #67527, problem summary explaining the deprecation, changes and how they work, and a complete checklist with manual test steps.
Title check	✅ Passed	The title clearly and accurately summarizes the main change: replacing deprecated PingCAP domains across multiple files (download.pingcap.org → download.pingcap.com).

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/update-pingcap-domains-master

Tip

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@dumpling/README.md`:
- Around line 32-34: Update the download URL for `bin/sync_diff_inspector` in
the README so it uses HTTPS instead of HTTP: replace
`http://download.pingcap.com/tidb-enterprise-tools-latest-linux-amd64.tar.gz`
with
`https://download.pingcap.com/tidb-enterprise-tools-latest-linux-amd64.tar.gz`
to match the other entries (`bin/tidb-server`, `bin/tidb-lightning`) and avoid
the HTTP->HTTPS redirect.

🪄 Autofix (Beta)

✅ Autofix completed

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 20910d86-9f5e-43c5-a765-0ae2c7c51abf

📥 Commits

Reviewing files that changed from the base of the PR and between 4d20c4a and 2caf375.

📒 Files selected for processing (3)

• br/tests/download_tools.sh
• dumpling/README.md
• dumpling/install.sh

[pantheon-ai]

✅ Code looks good. No issues found.

[coderabbitai]

Note

Autofix is a beta feature. Expect some limitations and changes as we gather feedback and continue to improve it.

Fixes Applied Successfully

Fixed 1 file(s) based on 1 unresolved review comment.

Files modified:

• dumpling/README.md

Commit: 6d24f8e1b56e458aff2faef581a96db3183c2371

The changes have been pushed to the fix/update-pingcap-domains-master branch.

Time taken: 1m 46s

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.7924%. Comparing base (4d20c4a) to head (6d24f8e).
⚠️ Report is 161 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #67522        +/-   ##
================================================
+ Coverage   77.7474%   78.7924%   +1.0449%     
================================================
  Files          1959       1960         +1     
  Lines        543377     543542       +165     
================================================
+ Hits         422462     428270      +5808     
+ Misses       120074     114247      -5827     
- Partials        841       1025       +184     

Flag	Coverage Δ
integration	44.4357% <ø> (+8.2610%)	⬆️
unit	76.7348% <ø> (+0.3497%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	61.5065% <ø> (ø)
parser	∅ <ø> (∅)
br	66.2966% <ø> (+5.2801%)	⬆️

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[wuhuizuo]

/retest

[tiprow]

@wuhuizuo: PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test.

Details

In response to this:

/retest

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[wuhuizuo]

/test ?

[ti-chi-bot]

@wuhuizuo: The following commands are available to trigger required jobs:

/test build

/test check-dev

/test check-dev2

/test mysql-test

/test pull-br-integration-test

/test pull-build-next-gen

/test pull-integration-e2e-test

/test pull-integration-realcluster-test-next-gen

/test pull-lightning-integration-test

/test pull-mysql-client-test

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The following commands are available to trigger optional jobs:

/test pingcap/tidb/canary_ghpr_unit_test

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/test pull-check-deps

/test pull-common-test

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/test pull-error-log-review

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/test pull-integration-e2e-test-next-gen

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Use /test all to run the following jobs that were automatically triggered:

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pingcap/tidb/ghpr_check

pingcap/tidb/ghpr_check2

pingcap/tidb/ghpr_mysql_test

pingcap/tidb/ghpr_unit_test

pingcap/tidb/pull_br_integration_test

pingcap/tidb/pull_build_next_gen

pingcap/tidb/pull_integration_e2e_test

pingcap/tidb/pull_integration_realcluster_test_next_gen

pingcap/tidb/pull_mysql_client_test

pingcap/tidb/pull_mysql_client_test_next_gen

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pull-check-deps

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[wuhuizuo]

/test check-dev2

[wuhuizuo]

/retest

[tiprow]

@wuhuizuo: PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test.

Details

In response to this:

/retest

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[ti-chi-bot]

@wuhuizuo: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
idc-jenkins-ci-tidb/check_dev_2	6d24f8e	link	true	/test check-dev2

Full PR test history. Your PR dashboard.

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