sahara-image-elements/elements/spark/root.d/0-check-spark

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#!/bin/bash
if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
if [ -z "${SPARK_DOWNLOAD_URL:-}" -a -z "${DIB_CDH_VERSION:-}" ]; then
echo -e "Neither DIB_CDH_VERSION nor SPARK_DOWNLOAD_URL are set. Impossible to install Spark.\nAborting"
exit 1
fi