Apache Hadoop集群安装（NameNode HA + SPARK + 机架感知）
--master yarn --deploy-mode cluster \--driver-memory 100M \
--executor-memory 200M \
--executor-cores 1 \
--queue default \
lib/spark-examples*.jar 10
或者：
./bin/spark-submit --class org.apache.spark.examples.SparkPi \
--master yarn --deploy-mode cluster \
--executor-cores 1 \
--queue default \
lib/spark-examples*.jar 10
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