[Enhancement]: Excessive log output during backup completion

[huanghaoyuanhhy]

What would you like to be added?

Lower the log level of non-essential messages from info to debug to reduce the log volume during backup operations. This will help maintain more concise logs while allowing detailed output to be available when needed.

Why is this needed?

During the backup completion process, the system logs a significant number of messages. The volume of these logs scales proportionally with the number of collections being backed up, leading to overly verbose output. This can clutter logs and make it difficult to identify critical information.

Anything else?

No response