bash: export: `HADOOP_OPTS-Djava.library.path=/home/hdoop/hadoop-3.3.0/lib/nativ': not a valid identifier code example
Example: WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Sounds silly, but if you've copied .bashrc lines from somewhere
check that the quotation marks are like this:
export HADOOP_OPTS="-Djava.library.path=$HADOOP_HOME/lib/native"
and not like this
export HADOOP_OPTS=”-Djava.library.path=$HADOOP_HOME/lib/native”
...took me some time