BUG: groupby.count maintains masked and arrow dtypes #3794
| Job | Run time |
|---|---|
| 0s | |
| 31m 32s | |
| 26m 48s | |
| 1h 13m 50s | |
| 44m 16s | |
| 1h 6m 43s | |
| 1h 6m 26s | |
| 1h 2m 5s | |
| 1h 9m 8s | |
| 7m 45s | |
| 37m 31s | |
| 1h 24m 59s | |
| 45m 48s | |
| 52m 11s | |
| 55m 26s | |
| 48m 57s | |
| 13m 59s | |
| 51m 5s | |
| 49m 59s | |
| 53m 42s | |
| 1h 3m 53s | |
| 55m 38s | |
| 17h 41m 41s |