How it works
Why does it behave this way?
- 1
The first work nobody requested
Why does a correct table degrade on its own, and why does maintenance get switched off?
- 2
Layout restoration
What file size minimizes scan time, and what stops files from growing larger?
5 pages - 3
Reclamation
Why can vacuum compute reachability but only guess liveness, and what does the retention window really bound?
3 pages - 4
Semantic migration
Why are partition changes different from compaction, and what does evolving a spec in metadata cost?
4 pages - 5
Running maintenance safely
Why does a long compaction keep losing to short appends, and how does semantic conflict detection fix it?
4 pages - 6
What maintenance forbids
What can no maintenance scheme do, and what does each escape cost?