Hive切换引擎(MR、Tez、Spark)
1. MapReduce计算引擎(默认)
            
            
              powershell
              
              
            
          
          set hive.execution.engine=mr;2. Tez引擎
            
            
              powershell
              
              
            
          
          set hive.execution.engine=tez;1. Spark计算引擎
            
            
              powershell
              
              
            
          
          set hive.execution.engine=spark;