Namenode stops automatically after a while when started Hadoop

Question

I have installed Hadoop, but after installation when I used jps command to see all Hadoop daemons are running or not, it worked. But I had to shut my system for some stuffs and again when I run the command again its showing all the daemons accept Namenode.

I have already checked with both these command start-all.sh and start-dfs.dh. Still its not working, can anyone give solution to this error?

Answer 1

Hi,

You can follow these steps which can solve your issue:

• Delete all the files from the temporary folder: 

rm -Rf <tmp dir>  (my was usr/edureka/hadoop/tmp)

• Forget the Namenode:

bin/hadoop namenode -format

• Start all process again:

bin/start-all.sh

I hope it will work.