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  • 熟悉常用的HBase操作,编写MapReduce作业

    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_Sex’,'S_Age'

    put 'Student','2015001','sname','Zhangshan'
    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'

    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
    • 在终端打印出学生表的所有记录数据;

    • 向学生表添加课程列族;
    • 向课程列族添加数学列并登记成绩为85;
    • 删除课程列;
    • 统计表的行数;count 's1'
    • 清空指定的表的所有记录数据;truncate 's1'
      scan 'Student'
      alter 'Student','NAME'=>'course'
      put 'Student','3','course:Math','85'
      dorp 'Student','course'
      count 's1'
      truncate 's1'
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  • 原文地址:https://www.cnblogs.com/www924121851/p/8980983.html
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