问题如题，报错：
[root@node01 servers]# hadoop jar loginVisit.jar cn.itcast.loginVisit.step1.Step1Main19/07/17 22:14:59 INFO client.RMProxy: Connecting to ResourceManager at node01/192.168.8.100:803219/07/17 22:14:59 WARN security.UserGroupInformation: PriviledgedActionException as:root (auth:SIMPLE) cause:java.net.ConnectException: Call From node01.hadoop.com/192.168.8.100 to node02:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefusedException in thread "main" java.net.ConnectException: Call From node01.hadoop.com/192.168.8.100 to node02:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
原因：
Step1Main.java中，path设置错误：
TextOutputFormat.setOutputPath(job,new Path("hdfs://node02:8020/loginVisit/output3"));
其中node02要改为node01.
严重怀疑代码被idea莫名其妙地修改了！
转载于:https://www.cnblogs.com/mediocreWorld/p/11204621.html
