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I am trying to execute following command in ubuntu18 where hdfs is installed. Kindly help.

hadoop fs -put /home/root-sai/Downloads/sample.txt /RBI

Error: 

put: File /RBI/sample.txt._COPYING_ could only be replicated to 0 nodes instead of minReplication (=1).  There are 0 datanode(s) running and no node(s) are excluded in this operation.
user4157124
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Harsha Ragyari
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    https://stackoverflow.com/questions/26545524/there-are-0-datanodes-running-and-no-nodes-are-excluded-in-this-operation – Sai Praneeth Apr 08 '20 at 11:57
  • finally got a solution which is very simple. 1)stop-dfs.sh 2)delete temporary files from datanode 3)Hadoop namenode -format 4)start-dfs.sh and continue with the command that giving error...It works like wonder. – Harsha Ragyari Apr 08 '20 at 12:22

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