fix _perform_upload method to use proper selector
#498
| Job | Run time |
|---|---|
| 30m 10s | |
| 4m 9s | |
| 34m 19s |
_perform_upload method to use proper selector
#498
| Job | Run time |
|---|---|
| 30m 10s | |
| 4m 9s | |
| 34m 19s |