RDD經常使用算子

spark集羣提交任務的命令： bin/spark-submit --master spark://node-1.XXXXX.com:7077,node-2.xxxx.com:7077 --executor-memory 512mb --total-executor-cores 4 --class com.xxxx.day1.WordCount /root/spark-1.0.jar  hdfs:

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