Hadoop 3.x后，应用的端口有所调整，如下：
| 分类 |
应用 |
Haddop 2.x |
Haddop 3 |
| NNPorts |
Namenode |
8020 |
9820 |
| NNPorts |
NN HTTP UI |
50070 |
9870 |
| NNPorts |
NN HTTPS UI |
50470 |
9871 |
| SNN ports |
SNN HTTP |
50091 |
9869 |
| SNN ports |
SNN HTTP UI |
50090 |
9868 |
| DN ports |
DN IPC |
50020 |
9867 |
| DN ports |
DN |
50010 |
9866 |
| DN ports |
DN HTTP UI |
50075 |
9864 |
| DN ports |
Namenode |
50475 |
9865 |
| YARN ports |
YARN UI |
8088 |
8088 |