ERROR: Attempting to operate on hdfs datanode as root

Getting error when we tried to start hadoop as a root user

To resolve this navigate to /usr/hdf/3.1.1.0-35/hadoop/etc/hadoop

open hadoop-env.sh file

Add the below lines

export HDFS_NAMENODE_USER="root"

export HDFS_DATANODE_USER="root"

export HDFS_SECONDARYNAMENODE_USER="root"

export YARN_RESOURCEMANAGER_USER="root"

export YARN_NODEMANAGER_USER="root"

Start hadoop now