sparkStream其实是一个微批处理
1 用spark-submit方式提交 先阻塞一个 :nc -lk 9999(绑定端口等待连接: nc -l -p port [-options] [hostname] [port])
/spark-submit --master local[2] --class org.apache.spark.examples.streaming.NetworkWordCount /home/hadoop/app/spark-2.2.0-bin-2.6.0-cdh5.7.0/examples/jars/spark-examples_2.11-2.2.0.jar hadoop000 9999