perf(backends): speed up most memtable existence checks #24305
| Job | Run time |
|---|---|
| 13m 37s | |
| 48s | |
| 5m 57s | |
| 57s | |
| 17m 46s | |
| 1m 29s | |
| 1m 59s | |
| 10m 54s | |
| 12m 57s | |
| 4m 17s | |
| 12m 27s | |
| 3m 29s | |
| 3m 17s | |
| 12m 50s | |
| 4m 14s | |
| 2m 47s | |
| 5m 23s | |
| 4m 12s | |
| 5m 54s | |
| 5m 35s | |
| 11m 40s | |
| 5m 0s | |
| 11m 34s | |
| 6m 56s | |
| 8m 56s | |
| 5m 43s | |
| 23m 32s | |
| 16m 22s | |
| 5m 27s | |
| 4m 6s | |
| 5m 31s | |
| 4m 34s | |
| 2m 59s | |
| 5m 37s | |
| 4m 36s | |
| 6m 8s | |
| 5m 45s | |
| 5m 16s | |
| 12m 25s | |
| 7m 37s | |
| 8m 53s | |
| 6m 9s | |
| 12m 44s | |
| 4m 26s | |
| 4m 40s | |
| 5m 0s | |
| 4m 5s | |
| 11m 55s | |
| 4m 59s | |
| 4m 58s | |
| 5m 27s | |
| 3m 58s | |
| 7m 56s | |
| 21m 31s | |
| 12m 10s | |
| 1s | |
| 6h 49m 25s |