Adjust mo_indexes Upgrade Order

[qingxinhome]

What type of PR is this?

• API-change
• BUG
• Improvement
• Documentation
• Feature
• Test and CI
• Code Refactoring

Which issue(s) this PR fixes:

issue #15386

What this PR does / why we need it:

Adjust system table mo_indexes Upgrade Order

[matrix-meow]

@qingxinhome Thanks for your contributions!

Pull Request Review:

Title:

The title of the pull request is clear and concise, indicating that the purpose is to adjust the upgrade order for the mo_indexes system table.

Body:

The body of the pull request provides relevant information such as the type of PR (BUG), the specific issue it fixes (issue #15386), and the reason for the changes. It is structured well and gives a brief overview of the purpose of the PR.

Changes:

1. Code Changes:
   • Added strconv and strings imports in the upgrader.go file.
   • Moved the strconv and strings imports to be together with other imports for better organization.
   • Adjusted the order of function calls in the Upgrade function to ensure UpgradeMoIndexesSchema is called before UpgradeNewTableColumn.
   • Removed duplicate call to UpgradeMoIndexesSchema in the Upgrade function.

Issues/Problems Identified:

1. Duplicate Function Call:

   • The UpgradeMoIndexesSchema function is called twice in the Upgrade function. This redundancy can lead to unexpected behavior and inefficiency. It should be called only once in the appropriate order.

2. Logging Error Handling:

   • Error handling in the Upgrade function is not consistent. The error logs are printed but the function continues to execute. This can potentially lead to issues if critical errors occur during the upgrade process. It is advisable to handle errors more robustly, possibly by returning an error and handling it at a higher level.

Suggestions for Improvement:

1. Remove Duplicate Function Call:

   • Remove the redundant call to UpgradeMoIndexesSchema in the Upgrade function to avoid unnecessary processing and ensure a more streamlined upgrade process.

2. Enhance Error Handling:

   • Consider revising the error handling mechanism in the Upgrade function. Instead of logging errors and continuing execution, evaluate if it is appropriate to return an error from the function when critical errors occur. This will provide better control and visibility over the upgrade process.

3. Optimization:

   • While the changes made address the adjustment of the upgrade order, further optimization could involve reviewing other parts of the codebase for similar issues or opportunities for improvement to enhance overall code quality.

By addressing the identified issues and considering the suggestions for improvement, the pull request can be enhanced to ensure a more efficient and reliable upgrade process for the mo_indexes system table.