|NO.Z.00020|——————————|BigDataEnd|——|Hadoop&HBase.V04|——|HBase.v04|HBase Shell操作|
一、HBase shell 基本操作
### --- 进入Hbase客户端命令操作界面
[root@linux121 ~]# hbase shell### --- 查看帮助命令
hbase(main):003:0> help### --- 查看当前数据库中有哪些表
hbase(main):003:0> list
TABLE
0 row(s) in 0.5710 seconds
=> []hbase(main):005:0> create 'yanqi', 'base_info', 'extra_info'
=> Hbase::Table - yanqi
hbase(main):006:0> list
yanqi ### --- 创建一张yanqi表， 包含base_info、extra_info两个列族
hbase(main):005:0> create 'yanqi', 'base_info', 'extra_info'
=> Hbase::Table - yanqi
hbase(main):006:0> list
yanqi ~~~ 或者(Hbase建表必须指定列族信息)
~~~ VERSIONS 是指此单元格内的数据可以保留最近的 3 个版本
hbase(main):004:0> hbase(main):008:0> create 'yanqi', {NAME => 'base_info', VERSIONS => '3'},{NAME => 'extra_info',VERSIONS => '3'}
hbase(main):008:0> list
yanqi ### --- 添加数据操作
~~~ # 向yanqi表中插入信息，row key为 rk1，列族base_info中添加name列标示符，值为wang
hbase(main):009:0> put 'yanqi', 'rk1', 'base_info:name', 'wang'~~~ # 向yanqi表中插入信息，row key为rk1，列族base_info中添加age列标示符，值为30
hbase(main):011:0> put 'yanqi', 'rk1', 'base_info:age', 30
~~~ # 向yanqi表中插入信息，row key为rk1，列族extra_info中添加address列标示符，值为shanghai
hbase(main):012:0> put 'yanqi', 'rk1', 'extra_info:address', 'shanghai'二、查询数据
### --- 通过rowkey进行查询
~~~ 获取表中row key为rk1的所有信息
hbase(main):013:0> get 'yanqi', 'rk1'
COLUMN CELL
base_info:age timestamp=1630575821963, value=30
base_info:name timestamp=1630575785484, value=wang
extra_info:address timestamp=1630575836086, value=shanghai ### --- 查看rowkey下面的某个列族的信息
~~~ # 获取yanqi表中row key为rk1，base_info列族的所有信息
hbase(main):014:0> get 'yanqi', 'rk1', 'base_info'
COLUMN CELL
base_info:age timestamp=1630575821963, value=30
base_info:name timestamp=1630575785484, value=wang### --- 查看rowkey指定列族指定字段的值
~~~ # 获取表中row key为rk1，base_info列族的name、age列标示符的信息
hbase(main):015:0> get 'yanqi', 'rk1', 'base_info:name', 'base_info:age'
COLUMN CELL
base_info:age timestamp=1630575821963, value=30
base_info:name timestamp=1630575785484, value=wang ### --- 查看rowkey指定多个列族的信息
~~~ # 获取yanqi表中row key为rk1，base_info、extra_info列族的信息
hbase(main):016:0> get 'yanqi', 'rk1', 'base_info', 'extra_info'
COLUMN CELL
base_info:age timestamp=1630575821963, value=30
base_info:name timestamp=1630575785484, value=wang
extra_info:address timestamp=1630575836086, value=shanghai ~~~ # 或者
hbase(main):017:0> get 'yanqi', 'rk1', {COLUMN => ['base_info', 'extra_info']}
COLUMN CELL
base_info:age timestamp=1630575821963, value=30
base_info:name timestamp=1630575785484, value=wang
extra_info:address timestamp=1630575836086, value=shanghai
~~~ # 或者
hbase(main):001:0> get 'yanqi', 'rk1', {COLUMN => ['base_info:name','extra_info:address']}
COLUMN CELL
base_info:name timestamp=1630575785484, value=wang
extra_info:address timestamp=1630575836086, value=shanghai ### --- 指定rowkey与列值查询
~~~ # 获取表中row key为rk1，cell的值为wang的信息
hbase(main):004:0> get 'yanqi', 'rk1', {FILTER => "ValueFilter(=,'binary:wang')"}
COLUMN CELL
base_info:name timestamp=1630575785484, value=wang### --- 指定rowkey与列值模糊查询
~~~ # 获取表中row key为rk1，列标示符中含有a的信息
hbase(main):005:0> get 'yanqi', 'rk1', {FILTER => "(QualifierFilter(=,'substring:a'))"}
COLUMN CELL
base_info:age timestamp=1630575821963, value=30
base_info:name timestamp=1630575785484, value=wang
extra_info:address timestamp=1630575836086, value=shanghai ### --- 查询所有数据
~~~ # 查询yanqi表中的所有信息
hbase(main):010:0> scan 'yanqi'
ROW COLUMN+CELL
rk1 column=base_info:age, timestamp=1630575821963, value=30
rk1 column=base_info:name, timestamp=1630575785484, value=wang
rk1 column=extra_info:address, timestamp=1630575836086, value=shanghai### --- 列族查询
~~~ # 查询表中列族为 base_info 的信息
~~~ # Scan时可以设置是否开启Raw模式,开启Raw模式会返回包括已添加删除标记但是未实际删除的数据
~~~ # VERSIONS指定查询的最大版本数
hbase(main):011:0> scan 'yanqi', {COLUMNS => 'base_info'}
ROW COLUMN+CELL
rk1 column=base_info:age, timestamp=1630575821963, value=30
rk1 column=base_info:name, timestamp=1630575785484, value=wang
1 row(s) in 0.0380 seconds
hbase(main):012:0> scan 'yanqi', {COLUMNS => 'base_info', RAW => true, VERSIONS=> 3}
ROW COLUMN+CELL
rk1 column=base_info:age, timestamp=1630575821963, value=30
rk1 column=base_info:name, timestamp=1630575785484, value=wang ### --- 指定多个列族与按照数据值模糊查询
~~~ # 查询yanqi表中列族为 base_info 和 extra_info且列标示符中含有a字符的信息
hbase(main):013:0> scan 'yanqi', {COLUMNS => ['base_info', 'extra_info'], FILTER=> "(QualifierFilter(=,'substring:a'))"}
ROW COLUMN+CELL
rk1 column=base_info:age, timestamp=1630575821963, value=30
rk1 column=base_info:name, timestamp=1630575785484, value=wang
rk1 column=extra_info:address, timestamp=1630575836086, value=shanghai ### --- rowkey的范围值查询（非常重要）
~~~ # 查询yanqi表中列族为base_info，rk范围是[rk1, rk3)的数据（
~~~ rowkey底层存储是字典序）按rowkey顺序存储。
hbase(main):014:0> scan 'yanqi', {COLUMNS => 'base_info', STARTROW => 'rk1',ENDROW => 'rk3'}
ROW COLUMN+CELL
rk1 column=base_info:age, timestamp=1630575821963, value=30
rk1 column=base_info:name, timestamp=1630575785484, value=wang ### --- 指定rowkey模糊查询
~~~ # 查询yanqi表中row key以rk字符开头的
hbase(main):015:0> scan 'yanqi',{FILTER=>"PrefixFilter('rk')"}
ROW COLUMN+CELL
rk1 column=base_info:age, timestamp=1630575821963, value=30
rk1 column=base_info:name, timestamp=1630575785484, value=wang
rk1 column=extra_info:address, timestamp=1630575836086, value=shanghai 三、更新数据
### --- 更新数据
~~~ 更新操作同插入操作一模一样，只不过有数据就更新，没数据就添加
~~~ 更新数据值~~~ # 把yanqi表中rowkey为rk1的base_info列族下的列name修改为liang
hbase(main):016:0> put 'yanqi', 'rk1', 'base_info:name', 'liang'四、删除数据和表
### --- 指定rowkey以及列名进行删除
~~~ # 删除yanqi表row key为rk1，列标示符为 base_info:name 的数据
hbase(main):017:0> delete 'yanqi', 'rk1', 'base_info:name'### --- 指定rowkey，列名以及时间戳信息进行删除
~~~ # 删除yanqi表row key为rk1，列标示符为base_info:name的数据
scan 'yanqi', {COLUMNS => 'base_info', RAW => true, VERSIONS => 3}
hbase(main):018:0> scan 'yanqi', {COLUMNS => 'base_info', RAW => true, VERSIONS => 3}
ROW COLUMN+CELL
rk1 column=base_info:age, timestamp=1630575821963, value=30
rk1 column=base_info:name, timestamp=1630576437128, type=DeleteColumn
rk1 column=base_info:name, timestamp=1630576413147, value=liang
rk1 column=base_info:name, timestamp=1630575785484, value=wang
hbase(main):019:0> delete 'yanqi', 'rk1', 'base_info:name',1630575785484hbase(main):020:0> scan 'yanqi', {COLUMNS => 'base_info', RAW => true, VERSIONS=> 3}
ROW COLUMN+CELL
rk1 column=base_info:age, timestamp=1630575821963, value=30
rk1 column=base_info:name, timestamp=1630576437128, type=DeleteColumn
rk1 column=base_info:name, timestamp=1630576413147, value=liang
rk1 column=base_info:name, timestamp=1630575785484, type=DeleteColumn
rk1 column=base_info:name, timestamp=1630575785484, value=wang ### --- 删除列族
~~~ # 删除 base_info 列族
hbase(main):001:0> alter 'yanqi', 'delete' => 'base_info'### --- 清空表数据
~~~ # 删除yanqi表数据
hbase(main):001:0> truncate 'yanqi'### --- 删除表：删除yanqi表
~~~ # 先disable 再drop
hbase(main):003:0> disable 'yanqi'
hbase(main):004:0> drop 'yanqi'
~~~ # 如果不进行disable，直接drop会报错
ERROR: Table user is enabled. Disable it first.Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart
——W.S.Landor
分类:
bdv010-hbase
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