hadoop之hbase(一)

一、hbase简介

二、hbase安装部署

ntpdate 0.cn.pool.ntp.org 同步服务器时间

三、hbase基本操作

1.进入hbase命令行

[root@node1 opt]# hbase shell

命令行写错 ， ctrl + back Space 删除

2,创建学生表

hbase(main):004:0> create 'student','info'

     

3.向student学生表中插入数据

RowKey	timestamp	info
		name	sex	age
1001		Thomas	male	18
1002		Janna	female	20

hbase(main):002:0> put 'student','1001','info:name','Thomas'
hbase(main):003:0> put 'student','1001','info:sex','male'
hbase(main):004:0> put 'student','1001','info:age','18'
hbase(main):005:0> put 'student','1002','info:name','11'
hbase(main):013:0> put 'student','1002','info:sex','female'
hbase(main):014:0> put 'student','1002','info:age','10'

4.修改表数据

hbase(main):016:0> put 'student','1002','info:name','janna'

5.查看表数据

hbase(main):017:0> scan 'student'

 指定rowkey范围查找

hbase(main):018:0> scan 'student',{STARTROW =>'1001',STOPROW =>'1001'}
hbase(main):019:0> scan 'student',{STARTROW =>'1001'}
#查看指定行数据
hbase(main):027:0> get 'student','1001'
#查看指定列簇数据
hbase(main):027:0> get 'student','1001','info:name'

7.删除表数据

#删除某rowkey的某一列数据
hbase(main):028:0> delete 'student','1001','info:isNull'
#删除某rowkey的全部数据
hbase(main):028:0> deleteall 'student','1001'

#清空表数据
hbase(main):005:0> truncate 'student'
#删除表之前,需要先禁用表
hbase(main):006:0> disable 'student'
#查看表是否禁用
hbase(main):007:0> is_enabled 'student'
hbase(main):008:0> is_disabled 'student'
#删除表
hbase(main):008:0> drop 'student'

8.查看表结构

hbase(main):021:0> desc 'student'

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