Exception in thread "main" java.net.ConnectException: Call From DESKTOP-API5IFV/192.168.5.

Exception in thread "main" java.net.ConnectException: Call From DESKTOP-API5IFV/192.168.5.1 to hadoop:8020 failed on connection exception: java.net.ConnectException: Connection refused: no further information; 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)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
 

在访问hadoop的文件时候用:

hdfs://hadoop/spark/test

导致出现以上的问题,个人认为在hadoop中配置的端口是9000,但是在Windows的环境中访问hadoop时,由于访问的URL里面没有指定端口,系统可能会随机用一个端口号:8020,最终端口号不一致,导致不能访问,最后改成:

hdfs://hadoop:9000/spark/test  就可以了
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