Daily Archives: January 12, 2016

Hive:简单查询不启用Mapreduce job而启用Fetch task

如果你想查询某个表的某一列,Hive默认是会启用MapReduce Job来完成这个任务,如下: 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 hive> SELECT id,... Read More | Share it now!