stream: fix merge() idle source draining #7581
| Job | Run time |
|---|---|
| 1m 18s | |
| 21s | |
| 29m 38s | |
| 50m 13s | |
| 27m 12s | |
| 24m 1s | |
| 24m 58s | |
| 24m 12s | |
| 24m 5s | |
| 25m 7s | |
| 24m 39s | |
| 4h 15m 44s |
| Job | Run time |
|---|---|
| 1m 18s | |
| 21s | |
| 29m 38s | |
| 50m 13s | |
| 27m 12s | |
| 24m 1s | |
| 24m 58s | |
| 24m 12s | |
| 24m 5s | |
| 25m 7s | |
| 24m 39s | |
| 4h 15m 44s |