feat: replace default engine JSON reader's FileStream with concurrent futures
#1629
| Job | Run time |
|---|---|
| 6m 17s | |
| 3s | |
| 6m 20s |
FileStream with concurrent futures
#1629
| Job | Run time |
|---|---|
| 6m 17s | |
| 3s | |
| 6m 20s |