hbase 简单操作

Posted 2020-08-25 薛定谔的猫！

创建一个表

hbase(main):001:0> create ‘student‘, ‘name‘
0 row(s) in 14.0260 seconds
 
=> Hbase::Table - student

 

列出所有表

hbase(main):025:0> list
TABLE
student
student_1
2 row(s) in 0.0270 seconds
 
=> ["student", "student_1"]

 

往表中添加数据

hbase(main):006:0> put ‘student‘, ‘row1‘, ‘name:a‘, ‘zhangxs‘
0 row(s) in 1.3820 seconds
 
hbase(main):007:0> put ‘student‘, ‘row2‘, ‘name:b‘, ‘li‘
0 row(s) in 0.0730 seconds

 

查询表中的数据

hbase(main):008:0> scan ‘student‘
ROW COLUMN+CELL
row1 column=name:a, timestamp=1482855835031, value=zhangxs
row2 column=name:b, timestamp=1482855883411, value=li
2 row(s) in 0.2530 seconds

 

查询表中指定行数的数据

hbase(main):009:0> get ‘student‘, ‘roww1‘
COLUMN CELL
0 row(s) in 0.1080 seconds
 
hbase(main):010:0> get ‘student‘, ‘row1‘
COLUMN CELL
name:a timestamp=1482855835031, value=zhangxs
1 row(s) in 0.1050 seconds

 

查询表中指定列的数据

hbase(main):020:0> scan ‘student‘,{COLUMNS=>‘name‘}
ROW COLUMN+CELL
row1 column=name:a, timestamp=1482855835031, value=zhangxs
row2 column=name:b, timestamp=1482855883411, value=li
2 row(s) in 0.1190 seconds

 

将表治为失效

hbase(main):011:0> disable ‘student‘
0 row(s) in 2.7450 seconds

 

当将表设置为失效后，就不能查询该表的数据

hbase(main):014:0> scan ‘student‘
ROW COLUMN+CELL
ERROR: student is disabled.

 

将表设置为生效

hbase(main):015:0> enable ‘student‘
0 row(s) in 1.3880 seconds

 

删除表需要先将表设置为disable,再删除

hbase(main):028:0> drop ‘student_1‘
0 row(s) in 2.4750 seconds