This pull request introduces a new garbage collection (GC) task for cleaning up inactive schedulers in the manager module. It includes the implementation of the scheduler GC logic and its integration into the server initialization process.

Scheduler GC Implementation:

• Added a new scheduler GC task in manager/gc/scheduler.go:
  • Defined constants for default GC parameters, such as batch size, TTL, interval, and timeout.
  • Implemented the scheduler struct and its RunGC method to delete inactive schedulers based on the TTL. The method uses a database query to identify and remove records in batches, logging the results.
  • Integrated a jobRecorder to track and record the GC task's execution details.

Integration into Server Initialization:

• Registered the new scheduler GC task in the server initialization process (manager/manager.go) to ensure it runs periodically.

Description

Related Issue

Completed part of #4179.

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.