The configuration files are for hadoop 3.2.2 pseudo distributed mode setup with access permission disabled.
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Download all xml files to replace existing hadoop configuration files in $HADOOP_HOME/etc/hadoop
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Set ENV for Hadoop :
export HADOOP_HOME=/home/username/hadoop-3.2.2 (Replace by your hadoop location)
export HADOOP_INSTALL=$HADOOP_HOME
export HADOOP_MAPRED=$HADOOP_HOME
export HADOOP_COMMON_HOME=$HADOOP_HOME
export HADOOP_HDFS_HOME=$HADOOP_HOME
export YARN_HOME=$HADOOP_HOME
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native
export PATH=$PATH:$HADOOP_HOME/bin:$HADOPP_HOME/sbin