mkdir -p ${CONFIG_DIR}/rpmnew
mkdir -p ${CONFIG_DIR}/externals/spark-hadoop

printf "Installing %-44s ..." "spark-env.sh"

if [ ! -e ${CONFIG_DIR}/spark-env.sh ]; then
    # Always install new files without comment
    cp -f ${INSTALL_DIR}/externals/spark-hadoop/conf/spark-env.sh ${CONFIG_DIR}/externals/spark-hadoop/spark-env.sh
    cp -f ${INSTALL_DIR}/externals/spark-hadoop/conf/spark-env.sh ${CONFIG_DIR}/rpmnew/spark-env.sh
    log_success_msg
elif [ -e ${CONFIG_DIR}/rpmnew/spark-env.sh ] && ! `diff -q ${CONFIG_DIR}/rpmnew/spark-env.sh ${INSTALL_DIR}/externals/spark-hadoop/conf/spark-env.sh >/dev/null` ; then
    # There are changes in the default config since last installed
    if ! `diff -q ${CONFIG_DIR}/rpmnew/spark-env.sh ${CONFIG_DIR}/externals/spark-hadoop/spark-env.sh >/dev/null` ; then
        # User has made their own changes too, so don't overwrite
        log_failure_msg "Not overwriting modified configuration file spark-env.sh"
    else
        # User has NOT made their own changes - ok to update
        cp -f ${INSTALL_DIR}/externals/spark-hadoop/conf/spark-env.sh ${CONFIG_DIR}/externals/spark-hadoop/spark-env.sh
        cp -f ${INSTALL_DIR}/externals/spark-hadoop/conf/spark-env.sh ${CONFIG_DIR}/rpmnew/spark-env.sh
        log_success_msg "Updated configuration file spark-env.sh"
    fi
else
    log_success_msg "No changes to configuration file spark-env.sh"
fi