Add entry logger scanner stats

[wuzhanpeng]

Descriptions of the changes in this PR:

Motivation

In our practice, when the throughput becomes larger, the trigger frequency of compaction will also increase, so that the scanning of entry log will also become frequent. It is well known that frequent read operations in HDD are a common cause of disk performance degradation, but we currently have no relevant monitoring information on this. Therefore, this pr provides a convenient way to provide additional monitoring of log scanning.

Changes

Add two counters for log scanning monitoring.

[wuzhanpeng]

rerun failure checks

[wuzhanpeng]

rerun failure checks

[wuzhanpeng]

rerun failure checks

[wuzhanpeng]

rerun failure checks

[wuzhanpeng]

@zymap Would you mind to help review it?

[hangc0276]

@wuzhanpeng Thanks for your contribution, would you please rebase the master? thanks.

[zymap]

@wuzhanpeng Do you want to continue to work on this? If not, I will remove the release label

[zymap]

Move it to the next release since this PR is inactive.

[StevenLuMT]

fix old workflow,please see #3455 for detail

[shoothzj]

closed by inactive, feel free to reopen it if you still want to working on this :)