Exception in thread “main” org.apache.spark.SparkException: When running with master ‘yarn’ either HADOOP_CONF_DIR or YARN_CONF_DIR must be set in the environment.
spark-env.sh
export HADOOP_CONF_DIR=/opt/bigdata/hadoop-2.9.2/etc/hadoop/
export YARN_CONF_DIR=/opt/bigdata/hadoop-2.9.2/etc/hadoop/
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