Hadoop - java.net.ConnectException: Connection refused

Question

I want connect to hdfs (in localhost) and i have a error:

Call From despubuntu-ThinkPad-E420/127.0.1.1 to localhost:54310 failed on connection exception: java.net.Connec

Answer 1

First check is if java processes are working or not by typing jps command on command line. On running jps command following processes are mandatory to run-->>

• DataNode
• jps
• NameNode
• SecondaryNameNode

If following processes are not running then first start the name node by using following command-->> start-dfs.sh

This worked out for me and removed the error you stated.