Facing below error while connecting to hadoop cluster from unix using hadoop fs command.
$ hadoop fs -ls
put: Call From cxln4.c.thelab-240901.internal/10.142.1.4 to cxln1.c.thelab-240901.internal:8020 failed on connection exception: java.net.ConnectException: Connecti
on refused; For more details see: ConnectionRefused - HADOOP2 - Apache Software Foundation
Please help me resolve it