Cannot initialize Cluster. Please check your configuration for mapreduce.framework.name and the co

log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory).  
log4j:WARN Please initialize the log4j system properly.  
log4j:WARN See https://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.  
Exception in thread "main" 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.run(Job.java:1238)  
    at org.apache.hadoop.mapreduce.Job.run(Job.java:1234)  
    at java.security.AccessController.doPrivileged(Native Method)  
    at javax.security.auth.Subject.doAs(Unknown Source)  
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)  
    at org.apache.hadoop.mapreduce.Job.connect(Job.java:1233)  
    at org.apache.hadoop.mapreduce.Job.submit(Job.java:1262)  
    at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1286)  
    at com.gome.accesslog.statistic.WordCountExample.main(WordCountExample.java:72)  
log4j:WARN No appenders could be found for