新手求助 hadoop 运行WordCount MapReduce Job 报错

[fb8206320]

运行这句代码的时候

bin/yarn jar share/hadoop/mapreduce/hadoop-mapreduce-examples-
2.5.0.jar wordcount /wordcountdemo/input /wordcountdemo/output

报如下错误

17/10/12 22:13:32 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
java.io.IOException: Cannot initialize Cluster. Please check your configuration for mapreduce.framework.name and the correspond server addresses.
	at org.apache.hadoop.mapreduce.Cluster.initialize(Cluster.java:120)
	at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:82)
	at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:75)
	at org.apache.hadoop.mapreduce.Job$9.run(Job.java:1255)
	at org.apache.hadoop.mapreduce.Job$9.run(Job.java:1251)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
	at org.apache.hadoop.mapreduce.Job.connect(Job.java:1250)
	at org.apache.hadoop.mapreduce.Job.submit(Job.java:1279)
	at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1303)
	at org.apache.hadoop.examples.WordCount.main(WordCount.java:87)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:72)
	at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:145)
	at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:74)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:212)

还希望有大神能帮忙指点迷津。

[fb8206320]

已解决，一个配置文件写错了。