INFO mapreduce.Cluster: Failed to use org.apache.hadoop.mapred.YarnClientProtocolProvider due to error:
java.lang.RuntimeException: Error in instantiating YarnClient
```java
INFO mapreduce.Cluster: Failed to use org.apache.hadoop.mapred.YarnClientProtocolProvider due to error:
java.lang.RuntimeException: Error in instantiating YarnClient
```
你看看你jps服务正常不正常
可参考：
https://bbs.csdn.net/topics/391009709?list=lz
https://stackoom.com/question/2Nx52