22/06/05 19:31:26 INFO client.RMProxy: Connecting to ResourceManager at ubuntu1/192.168.59.130:8032

最近在使用Hadoop做一些作业，今天在运行Hadoop只带word count的时候出现了点小问题，现在来分享一下，希望对大家有帮助。

我遇到的问题是这个：

22/06/05 19:31:26 INFO client.RMProxy: Connecting to ResourceManager at ubuntu1/192.168.59.130:8032
org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory hdfs://ubuntu1:8020/output already exists
	at org.apache.hadoop.mapreduce.lib.output.FileOutputFormat.checkOutputSpecs(FileOutputFormat.java:146)
	at org.apache.hadoop.mapreduce.JobSubmitter.checkSpecs(JobSubmitter.java:266)
	at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:139)
	at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1290)
	at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1287)
	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:1698)
	at org.apache.hadoop.mapreduce.Job.submit(Job.java:1287)
	at