Hbase基本shell操作
环境：Habse version 1.2.6.1 on redhat6.4 64bit
1.进入hbase命令行： ./hbase shell
[root@rhel64-64bit bin]# ./hbase shell
HBase Shell; enter 'help' for list of supported commands.
Type "exit" to leave the HBase Shell
Version 1.2.6.1, rUnknown, Sun Jun 3 23:19:26 CDT 2018
hbase(main):001:0> 2.hbase help帮助命令:
help --- 获取所有命令提示
help 'ddl' ---获取一组命令的提示
help 'put' ---获取某个单独命令的提示帮助
3.general command
hbase(main):007:0> status ---查看服务器状态
1 active master, 0 backup masters, 0 servers, 1 dead, NaN average load
hbase(main):008:0> version ---查看版本
1.2.6.1, rUnknown, Sun Jun 3 23:19:26 CDT 20184.DDL command对表进行操作
1》create 创建表
create 'test2',{NAME=>'info',VERSIONS=>3 },{NAME=>'info2',VERSIONS=>1 }
hbase(main):013:0> create 'test2', 'info'
0 row(s) in 1.3700 seconds
=> Hbase::Table - test2
2》list 列出表
hbase(main):014:0> list
TABLE
test
test2
2 row(s) in 0.0190 seconds
=> ["test", "test2"]
3》describe 查看表结构信息
hbase(main):015:0> describe 'test2'
Table test2 is ENABLED
test2
COLUMN FAMILIES DESCRIPTION
{NAME => 'info', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COMPRESS
ION => 'NONE', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'}
1 row(s) in 0.1630 seconds
4》alter 修改表结构
alter 'test2', NAME => 'info2' ----增加info2列簇
alter 'test2', {NAME => 'info2', METHOD => 'delete'} ---删除info2列簇
alter 'test2', {NAME=>'info',VERSIONS=>3} ---修改column family保留版本数
5》disable,drop 先disable表再能删除表
hbase(main):022:0> disable 'test'
0 row(s) in 2.3720 seconds
hbase(main):023:0> drop 'test'
0 row(s) in 1.3350 seconds
hbase(main):024:0> list
TABLE
test2
1 row(s) in 0.0130 seconds
=> ["test2"]5.DML comand 对表数据进行操作
1》put 添加数据
put 'test2', 'user1', 'info:name', 'yo1'
put 'test2', 'user2', 'info:name', 'yo2'
put 'test2', 'user1', 'info:age', '18'
put 'test2', 'user1', 'info:score', '96'
hbase(main):028:0> put 'test2', 'user1', 'info:score', '96'
0 row(s) in 0.0100 seconds
2》scan 查看表数据
hbase(main):029:0> scan 'test2'
ROW COLUMN+CELL
user1 column=info:age, timestamp=1532076813178, value=18
user1 column=info:name, timestamp=1532076778014, value=yo1
user1 column=info:score, timestamp=1532076822923, value=96
user2 column=info:name, timestamp=1532076804216, value=yo2
2 row(s) in 0.0620 seconds
hbase(main):032:0> scan 'test2',{COLUMNS =>'info:name' } ---只查看某一列
ROW COLUMN+CELL
user1 column=info:name, timestamp=1532076778014, value=yo1
user2 column=info:name, timestamp=1532076804216, value=yo2
2 row(s) in 0.0270 seconds
alter 'test2', {NAME=>'info',VERSIONS=>3}
scan 'test2',{COLUMNS =>'info:age', VERSIONS => 3 }
---查看列簇的所有版本信息
hbase(main):039:0> scan 'test2',{COLUMNS =>'info', VERSIONS => 3 }
ROW COLUMN+CELL
user1 column=info:age, timestamp=1532077259255, value=22
user1 column=info:age, timestamp=1532077253480, value=20
user1 column=info:age, timestamp=1532076813178, value=18
user1 column=info:name, timestamp=1532076778014, value=yo1
user1 column=info:score, timestamp=1532076822923, value=96
user2 column=info:name, timestamp=1532076804216, value=yo2
2 row(s) in 0.0120 seconds
3》get 查看某个rowkey的数据
base(main):033:0> get 'test2','user1'
COLUMN CELL
info:age timestamp=1532076813178, value=18
info:name timestamp=1532076778014, value=yo1
info:score timestamp=1532076822923, value=96
3 row(s) in 0.0790 seconds
hbase(main):034:0> get 'test2','user1','info:age'
COLUMN CELL
info:age timestamp=1532076813178, value=18
1 row(s) in 0.0070 seconds
4》delete 删除表数据
delete ,, , ,
delete 'test2','user1','info:age',1532077872555
----删除最老的一个版本时间戳为1532077872555，如果删除的不是最老版本，
假如是第二的版本，那么scan则不能看到比删除版本老的版本
具体见help 'delete'说明： When scanning, a delete cell suppresses older versions
hbase(main):007:0> delete 'test2','user1','info:age',1532077872555
0 row(s) in 0.0350 seconds
hbase(main):008:0> scan 'test2',{COLUMNS =>'info', VERSIONS => 3 }
ROW COLUMN+CELL
user1 column=info:age, timestamp=1532078108418, value=19
user1 column=info:age, timestamp=1532078105258, value=18
user1 column=info:name, timestamp=1532076778014, value=yo1
user1 column=info:score, timestamp=1532076822923, value=96
user2 column=info:name, timestamp=1532076804216, value=yo2
5》truncate
hbase(main):009:0> truncate 'test2'
Truncating 'test2' table (it may take a while):
- Disabling table...
- Truncating table...
0 row(s) in 3.9790 seconds
hbase(main):010:0> scan 'test2'
ROW COLUMN+CELL
0 row(s) in 0.1550 seconds
hbase(main):011:0>
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