为什么hadoop 没有driver 的概念而spark 中有
spark-shell
spark-submit --class org.apache.spark.repl.Main
spark-sql
spark-submit --class org.apache.spark.sql.hive.thriftserver.SparkSQLCLIDriver
spark-thriftServer
spark-submit --class org.apache.spark.sql.hive.thriftserver.HiveThriftServer