GH-43986: [C++][Acero] Some code cleanup to Grouper
#47211
| Job | Run time |
|---|---|
| 8m 14s | |
| 45m 30s | |
| 15m 37s | |
| 24m 41s | |
| 17m 55s | |
| 1h 51m 57s |
Grouper
#47211
| Job | Run time |
|---|---|
| 8m 14s | |
| 45m 30s | |
| 15m 37s | |
| 24m 41s | |
| 17m 55s | |
| 1h 51m 57s |