ERROR: JAVA_ HOME is not set and could not be found.
Background
- attempting to operate on HDFS namenode as root, but there is no HDFS_ NAMENODE_ USER defined. Aborting
Solution
- in $Hadoop_ Add the location of the JDK in the home/etc/Hadoop directory. Note that it is distributed to other machines in the cluster
export JAVA_HOME=/opt/module/jdk1.8
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