fix deadlock by log wait tool long

[zhangxu19830126]

What type of PR is this?

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

Which issue(s) this PR fixes:

issue #15960

What this PR does / why we need it:

fix deadlock by log wait tool long

[matrix-meow]

@zhangxu19830126 Thanks for your contributions!

Pull Request Review:

Title:

The title of the pull request is clear and concise, indicating that it aims to fix a deadlock issue related to logging when waiting too long.

Body:

The body of the pull request provides relevant information about the type of PR (BUG), the specific issue it fixes (issue #15960), and the purpose of the changes, which is to address the deadlock by logging when waiting too long.

Changes:

1. Fixing Deadlock Issue:

   • The changes in the waiter_events.go file address the deadlock issue by introducing logging when waiting too long to prevent the deadlock scenario.
   • The addition of logging with detailed information such as wait duration, key, binding, lock details, and transaction ID helps in diagnosing and resolving the deadlock situation effectively.

2. Optimization Suggestions:

   • Avoiding Duplicate Code: The code snippet for logging when waiting too long is repeated in two places. To optimize this, consider refactoring the code to a separate function that can be called from both places to avoid duplication and improve maintainability.
   • Consistent Naming: Ensure consistency in variable naming conventions across the codebase for better readability and maintainability.

3. Security Concern:

   • Read-Write Lock Handling: While the code uses read-write locks (RLock and RUnlock), ensure that the locking mechanism is correctly implemented to prevent potential race conditions or deadlocks. Verify that the locking and unlocking operations are appropriately handled to avoid concurrency issues.

4. Code Quality Improvement:

   • Struct Initialization: When initializing the checkOrphan struct, ensure that all fields are consistently initialized to maintain code clarity and prevent potential bugs related to uninitialized fields.

Overall Suggestions:

• Consider refactoring the code to eliminate duplication and improve code reusability.
• Perform thorough testing, including stress testing and concurrency testing, to validate the changes and ensure the resolution of the deadlock issue.
• Conduct a code review to ensure adherence to coding standards and best practices, especially regarding concurrency handling and logging mechanisms.

By addressing the optimization suggestions and security concerns highlighted above, the pull request can enhance the code quality and reliability of the system while effectively resolving the deadlock issue.