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TiDB auto increment MySQL-compatible behavior clarification (#20152) #20286

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This is an automated cherry-pick of #20152

What is changed, added or deleted? (Required)

Improved the MySQL compatibility mode section in auto-increment.md by:

  1. Providing a clearer introduction that immediately states the purpose and benefits
  2. Adding practical examples showing behavior differences between AUTO_ID_CACHE 1 and default mode
  3. Explaining when and why gaps might occur in the sequence
  4. Restructuring the version-specific notes for better readability
  5. Adding information about v8.1.0 changes regarding forceRebase operation

These changes make it easier for users to:

  • Understand the practical differences between MySQL compatibility mode and default mode
  • See concrete examples of ID allocation behavior in different scenarios
  • Understand the performance implications across different TiDB versions

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

Since this change includes information about behavior changes across multiple versions (v6.4.0 and v8.1.0) and documents current functionality, it should be applied to:

  • master (the latest development version)
  • v9.0 (TiDB 9.0 versions)
  • v8.5 (TiDB 8.5 versions)
  • v8.4 (TiDB 8.4 versions)
  • v8.3 (TiDB 8.3 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)?

N/A

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

alastori and others added 8 commits February 13, 2025 10:21
- Update GitHub repository links from tidb-tools to tiflow

- Add TiUP installation method for v9.0.0+

- Update Docker image references

- Add version-specific installation instructions

- Update download-ecosystem-tools.md with new package information
Update Docker image for sync-diff-inspector

The previous `docker pull pingcap/tiflow:latest` command was incorrect. After confirming with Flare Zuo (R&D Group - Engineering Productivity - Efficiency & Ops team), we should use `docker pull pingcap/sync-diff-inspector:latest` to align with TiCDC and DM, ensuring consistency across TiFlow-managed images.

This update reflects the correct image name for better usability.
This commit improves the documentation by: Adding clearer introduction and benefits, including practical examples of ID allocation, adding comparison between AUTO_ID_CACHE modes, restructuring version-specific notes, and adding v8.1.0 forceRebase information
@ti-chi-bot ti-chi-bot added lgtm size/M Denotes a PR that changes 30-99 lines, ignoring generated files. type/cherry-pick-for-release-8.4 type/enhancement The issue or PR belongs to an enhancement. labels Feb 13, 2025
@lilin90
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lilin90 commented Feb 13, 2025

/approve

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ti-chi-bot bot commented Feb 13, 2025

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lilin90

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@ti-chi-bot ti-chi-bot bot added the approved label Feb 13, 2025
@ti-chi-bot ti-chi-bot bot merged commit 85661dd into pingcap:release-8.4 Feb 13, 2025
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3 participants