PERF: Avoid deep copies when casting dtypes in merge #27528
| Job | Run time |
|---|---|
| 13m 48s | |
| 22m 21s | |
| 19m 2s | |
| 36m 8s | |
| 53m 56s | |
| 45m 49s | |
| 41m 19s | |
| 35m 44s | |
| 32m 19s | |
| 31m 19s | |
| 14m 9s | |
| 34m 20s | |
| 49m 7s | |
| 11m 56s | |
| 13m 29s | |
| 44m 28s | |
| 16m 42s | |
| 35m 59s | |
| 19m 50s | |
| 27m 29s | |
| 40m 36s | |
| 11m 3s | |
| 34m 42s | |
| 38m 42s | |
| 44m 46s | |
| 27m 50s | |
| 23m 20s | |
| 5m 35s | |
| 35m 54s | |
| 21m 56s | |
| 16m 20s | |
| 14h 59m 58s |