[backport 2.3.x] BUG: fix fill value for gouped sum in case of unobserved categories for string dtype (empty string instead of 0) (#61909) #25512
| Job | Run time |
|---|---|
| 24m 16s | |
| 20m 21s | |
| 36m 15s | |
| 34m 21s | |
| 17m 1s | |
| 26m 15s | |
| 23m 54s | |
| 43m 44s | |
| 32m 2s | |
| 33m 30s | |
| 37m 59s | |
| 42m 43s | |
| 42m 45s | |
| 54m 59s | |
| 1h 2m 58s | |
| 42m 50s | |
| 51m 54s | |
| 51m 35s | |
| 37m 28s | |
| 51m 13s | |
| 42m 5s | |
| 28m 46s | |
| 28m 16s | |
| 40m 55s | |
| 29m 21s | |
| 1h 35m 0s | |
| 23m 49s | |
| 29m 16s | |
| 28m 13s | |
| 6m 56s | |
| 55m 45s | |
| 50m 28s | |
| 28m 45s | |
| 28m 0s | |
| 28m 56s | |
| 28m 41s | |
| 39m 12s | |
| 36m 45s | |
| 8m 9s | |
| 22m 57s | |
| 29m 16s | |
| 28m 3s | |
| 1d 1h 5m 37s |