Hadoop put command throws - could only be replicated to 0 nodes, instead of 1

Question

I am new to Hadoop, I am trying to do pseudo distributed mode setup on my ubuntu machine and facing an issue with hadoop put command. My configuration details are a

Answer 1

This is due to the data node problem. Start your datanode and do the operation now

Answer 2

Did you check "dfs.replication" at "hdfs-site.xml" has minimum 1. I think you may put 0 replication.

And also check all hadoop services are running or not?

To check Running status: run JPS command

To start the service individually: Goto ...\hadoop\bin\

start hadoop {datanode \ namenode}
start yarn {nodemanager \ resourcemanager}