Hope you are doing well,


Please follow the steps given below:


Step 1 : Stop all the daemons first

 

stop-all.sh


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

 

start-all.sh



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. 

 

Kindly share your feedback by clicking on either of the smiley's.