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Adding new user `hduser' (1001) with group `hadoop' ... [Y/n] Y Hadoop requires SSH access to manage its nodes, i.e. For our single-node setup of Hadoop, we therefore need to configure SSH access to localhost.
So, we need to have SSH up and running on our machine and configured it to allow SSH public key authentication.
Before editing this file, we need to create two directories which will contain the namenode and the datanode for this Hadoop installation.
Block Manager: min Replication = 1 15/04/18 INFO blockmanagement.
Hadoop uses SSH (to access its nodes) which would normally require the user to enter a password.
However, this requirement can be eliminated by creating and setting up SSH certificates using the following commands.
FSNamesystem: supergroup = supergroup 15/04/18 INFO namenode.
FSNamesystem: is Permission Enabled = true 15/04/18 INFO namenode.