add test log

[ascend-direct-dev]

Description

Type of Change

• Types
  • Bug fix
  • New feature
    • Transfer Engine
    • Mooncake Store
    • Mooncake EP
    • Integration
    • P2P Store
    • Python Wheel
  • Breaking change
  • CI/CD
  • Documentation update
  • Other

How Has This Been Tested?

Checklist

• I have performed a self-review of my own code.
• I have updated the documentation.
• I have added tests to prove my changes are effective.

[gemini-code-assist]

Summary of Changes

Hello @ascend-direct-dev, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on improving the observability of the data transfer process by integrating additional informational log statements at critical stages. These new logs will provide clearer insights into when transfer batches are submitted, queued, and executed, which will be invaluable for debugging and monitoring the flow of data within the system.

Highlights

• Enhanced Logging for Transfer Submission: Added an informational log message in mooncake-store/src/transfer_task.cpp to indicate when a transfer batch is being submitted, including the batch ID and the process ID.
• Improved Logging for Transfer Engine Queueing: Introduced a log message in mooncake-transfer-engine/src/transport/ascend_transport/ascend_direct_transport/ascend_direct_transport.cpp when a batch ID is pushed to the slice queue, aiding in tracking transfer progress.
• Detailed Logging for Transfer Connection and Execution: Added two new log messages within mooncake-transfer-engine/src/transport/ascend_transport/ascend_direct_transport/ascend_direct_transport.cpp: one at the start of the connectAndTransfer function to show the target engine and process ID, and another just before calling TransferSync to mark the beginning of the synchronous transfer operation.

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[gemini-code-assist]

Code Review

This pull request adds several LOG(INFO) statements across different files. Based on the PR title 'add test log' and the content of the logs (e.g., including process IDs), these appear to be for debugging purposes. While useful for development, LOG(INFO) statements can create a lot of noise in production logs. It is recommended to convert these to verbose logs using VLOG(1), which is already in use in the codebase. This allows the logs to be enabled for debugging without affecting production environments.