[components][dfs]add some comments and fix some former comments error for dfs v1. #4624
| Job | Run time |
|---|---|
| 6m 46s | |
| 11m 3s | |
| 15m 29s | |
| 6m 15s | |
| 11m 40s | |
| 9m 14s | |
| 6m 19s | |
| 5m 23s | |
| 6m 3s | |
| 5m 1s | |
| 6m 13s | |
| 3m 41s | |
| 5m 10s | |
| 2m 57s | |
| 4m 19s | |
| 2m 39s | |
| 6m 20s | |
| 2m 28s | |
| 20m 4s | |
| 3m 12s | |
| 12m 21s | |
| 2h 32m 37s |