Environment Variables for Hadoop, Spark, Java etc.

.bash_profile

# export homebrew bin folder
export PATH="/usr/local/bin:$PATH"

# export homebrew sbin home
export PATH="/usr/local/sbin:$PATH"

# export java home
export JAVA_HOME=$(/usr/libexec/java_home)

# export scala home
export SCALA_HOME="/usr/local/bin/scala"  

# export scala bin
export PATH="$PATH:$SCALA_HOME/bin"

# export hadoop home
export HADOOP_HOME="/usr/local/Cellar/hadoop/2.7.1"

# export hadoop exec
export HADOOP_CONF_DIR="$HADOOP_HOME/libexec/etc/hadoop"

# hadoop optionsch
export HADOOP_OPTS="$HADOOP_OPTS -Djava.security.krb5.realm= -Djava.security.krb5.kdc="