Hope you are doing well,

Please follow the steps given below:

Step 1 : Stop all the daemons first



Step 2 : Delete the datanode directories which you have mentioned in the hdfs-site.xml


rm -rf datanode_directory

Step 3 : Re-create the datanode directories again and

mkdir directory_name


chmod 755 directory_name

Step 4 : Format the namenode

bin/hadoop namenode -format


Step 5 : Start all the daemons



I think this will resolve your query.

Please let me know if you have any further issue regarding this.

Feel free to contact us in case you have any query. 


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