The stat background compact skipped file as not meeting requirements for compaction can be incremented for two reasons:

• File too small (< 1MB)
• Compaction is not worth it, we skip it

It would be helpful to know why we are skipping a file and not have one stat that encompasses all scenarios.

Furthermore, if we decide to skip a file after compaction was not successful (enough), it would be great to have a stat for it.

We should end up with:

• A dedicated stat for each reason why we are skipping a file
• A dedicated stat whenever a file is skipped because it has been decided it's not worth looking into it for some time.