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 |
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;list
-
list
- 在终端打印出学生表的所有记录数据;
-
scan 'Student'
- 向学生表添加课程列族;
-
alter ‘Student',NAME=>'course'
- 向课程列族添加数学列并登记成绩为85;
-
put 'Student','3','course:Math','85'
- 删除课程列;
-
dorp 'Student','course'
- 统计表的行数;count 's1'
-
count 'Student'
- 清空指定的表的所有记录数据;truncate 's1'
-
truncate 'Student'