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How to restart NameNode or all the daemons in Hadoop?

In Hadoop how to restart NameNode or all the daemons?


By following methods we can restart the NameNode:

  • You can stop the NameNode individually using /sbin/ stop namenode command. Then start the NameNode using /sbin/ start namenode.
  • Use /sbin/ and the use /sbin/, command which will stop all the demons first. Then start all the daemons.
    The sbin directory inside the Hadoop directory store these script files.