impala

1. impala 

   impala-shell -i host12.devtest.example.com:21000

2. impala 명령

   cat > test1.txt

   1, a, b, 4

   2, c, d, 3

   3, e, f, 5

   4, g, h, 6

   hadoop dfs -mkdir /user/hive/staging

   hadoop dfs -put test1.txt /user/hive/staging

   

   impala-shell -i master01

   > create database test;

   > use test;

   > create table test1 (id int, n1 string, n2 string, wei float)

      row format delimited fields terminated by ',';

   > describe formatted test1;