熟悉常用的HBase操作
1. 以下关系型数据库中的表和数据,要求将其转换为适合于HBase存储的表并插入数据:
学生表(Student)(不包括最后一列)
学号(S_No) |
姓名(S_Name) |
性别(S_Sex) |
年龄(S_Age) |
课程(course) |
2015001 |
Zhangsan |
male |
23 |
|
2015003 |
Mary |
female |
22 |
|
2015003 |
Lisi |
male |
24 |
数学(Math)85 |
1
2
3
4
5
6
7
8
9
10
11
12
13
|
create 'Student' , ' S_No ' , 'S_Name' , ’S_Sex’, 'S_Age' put 'Student' , '1' , 'S_No' , '2015001' put 'Student' , '1' , 'S_Name' , 'Zhangsan' put 'Student' , '1' , 'S_Sex' , 'male' put 'Student' , '1' , 'S_Age' , '23' put 'Student' , '2' , 'S_No' , '2015003' put 'Student' , '2' , 'S_Name' , 'Mary' put 'Student' , '2' , 'S_Sex' , 'female' put 'Student' , '2' , 'S_Age' , '22' put 'Student' , '3' , 'S_No' , '2015003' put 'Student' , '3' , 'S_Name' , 'Lisi' put 'Student' , '3' , 'S_Sex' , 'male' put 'Student' , '3' , 'S_Age' , '24' |
2. 用Hadoop提供的HBase Shell命令完成相同任务:
- 列出HBase所有的表的相关信息;
-
1
list
- 在终端打印出学生表的所有记录数据;
-
1
scan
'Student'
- 向学生表添加课程列族;
-
1
alter ‘Student
',NAME=>'
course'
- 向课程列族添加数学列并登记成绩为85;
-
1
put
'Student'
,
'3'
,
'course:Math'
,
'85'
- 删除课程列;
-
1
dorp
'Student'
,
'course'
- 统计表的行数;count 's1'
-
1
count
'Student'
- 清空指定的表的所有记录数据;truncate 's1'
-
1
truncate
'Student'