refactor(backends): clean up resources produced by memtable
#24162
| Job | Run time |
|---|---|
| 48s | |
| 9m 36s | |
| 5m 51s | |
| 9m 30s | |
| 51s | |
| 8m 6s | |
| 2m 4s | |
| 4m 19s | |
| 2m 5s | |
| 9m 34s | |
| 3m 26s | |
| 9m 35s | |
| 3m 6s | |
| 9m 35s | |
| 4m 0s | |
| 2m 35s | |
| 4m 58s | |
| 3m 54s | |
| 5m 29s | |
| 5m 17s | |
| 9m 32s | |
| 4m 40s | |
| 9m 8s | |
| 6m 48s | |
| 8m 30s | |
| 5m 29s | |
| 9m 34s | |
| 8m 36s | |
| 4m 58s | |
| 3m 59s | |
| 3m 26s | |
| 4m 29s | |
| 2m 53s | |
| 6m 6s | |
| 4m 26s | |
| 5m 54s | |
| 5m 45s | |
| 5m 15s | |
| 5m 18s | |
| 7m 25s | |
| 8m 19s | |
| 5m 42s | |
| 8m 36s | |
| 4m 39s | |
| 4m 55s | |
| 4m 59s | |
| 3m 25s | |
| 5m 58s | |
| 5m 2s | |
| 4m 28s | |
| 5m 10s | |
| 3m 36s | |
| 7m 26s | |
| 8m 59s | |
| 8m 54s | |
| 1s | |
| 5h 16m 59s |