feature: After the truncate function clears the data, the underlying DATA storage file will not be cleared

[konghaiya]

Is your feature request related to a problem? Please describe.

After the truncate function clears the data, the underlying DATA storage file will not be cleared.

Describe the solution you'd like

We expect that after the truncate function is executed, the underlying data storage file will also be cleaned up

Describe alternatives you've considered

Additional context