Problem screenshot

Problem description

Error: Error running query: MetaException(message:Got exception: 
java.net.ConnectException Call From hadoop102/192.168.121.102 to hadoop102:9000 
failed on connection exception: 
java.net.ConnectException: Connection denied;
For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused) (state=,code=0)

Cause:

Hadoop cluster is not started

Solution:

Start Hadoop cluster: detailed steps

Result screenshot