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

复制代码
create 'Student','sname','ssex','sage'

put 'Student','2015001','sname','Zhangsan'

put 'Student','2015001','ssex','male'

put 'Student','2015001','sage','23'

put 'Student','2015002','sname','Mary'

put 'Student','2015002','ssex','female'

put 'Student','2015002','sage','22'

put 'Student','2015003','sname','Lisi'

put 'Student','2015003','ssex','male'

put 'Student','2015003','sage','24
复制代码

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'
posted @ 2018-05-08 21:52  lawliet9  阅读(134)  评论(0编辑  收藏  举报