命令行(hbase shell)
hbase shell进入客 户端
[hadoop@pg1 ~]$ hbase shell
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/ups/app/hbase/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/ups/app/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
HBase Shell; enter \'help<RETURN>\' for list of supported commands.
Type "exit<RETURN>" to leave the HBase Shell
Version 1.3.6, r806dc3625c96fe2cfc03048f3c54a0b38bc9e984, Tue Oct 15 01:55:41 PDT 2019
hbase(main):001:0>
exit 退出 hbase shell 客户端
表结构操作
- create：创建
- list：查看表列表
- desc：查看表的详细信息
- drop：删除表
- truncate：清空表
- alter：修改表的定义
create
help \'create\'
# t1是表名，f1,f2,f3是列簇的名
create \'t1\', {NAME => \'f1\'}, {NAME => \'f2\'}, {NAME => \'f3\'}
# 创建了一个名为myHbase的表，表里面有1个列簇，名为myCard，保留5个版本信息
create \'myHbase\',{NAME => \'myCard\',VERSIONS => 5}
list
hbase(main):046:0> list
TABLE
myHbase t1
2 row(s) in 0.0450 seconds
=> ["myHbase", "t1"]
hbase(main):047:0>
desc
hbase(main):047:0> desc \'myHbase\'
Table myHbase is ENABLED
myHbase
COLUMN FAMILIES DESCRIPTION
{NAME => \'myCard\', BLOOMFILTER => \'ROW\', VERSIONS => \'5\', IN_MEMORY => \'false\', KEEP_DELETED_CELLS => \'FALSE\', DATA_BLOCK_ENCODIN
G => \'NONE\', TTL => \'FOREVER\', COMPRESSION => \'NONE\', MIN_VERSIONS => \'0\', BLOCKCACHE => \'true\', BLOCKSIZE => \'65536\', REPLICATIO
N_SCOPE => \'0\'}
1 row(s) in 0.0740 seconds
hbase(main):048:0>
修改表定义
添加一个列簇
alter \'myHbase\', NAME => \'myInfo\'
删除一个列簇
alter \'myHbase\', NAME => \'myCard\', METHOD => \'delete\'
alter \'myHbase\', \'delete\' => \'myCard\'
添加列簇hi同时删除列簇myInfo
alter \'myHbase\', {NAME => \'hi\'}, {NAME => \'myInfo\', METHOD => \'delete\'}
truncate
truncate \'myHbase\'
drop
先停用表，再删除
disable \'myHbase\'
drop \'myHbase\'
表数据操作
- 增：put
- 删：delete
- 查：get + scan
- 改：==
创建 user 表，包含 info、data 两个列簇
create \'user_info\',{NAME=>\'base_info\',VERSIONS=>3 },{NAME=>\'extra_info\',VERSIONS=>1 }
增
需要传入表名，rowkey，列簇名、值等
向 user 表中插入信息，row key 为 user0001，列簇 base_info 中添加 name 列标示符，值为 zhangsan1
put \'user_info\', \'user0001\', \'base_info:name\', \'zhangsan1\'
put \'user_info\', \'zhangsan_20150701_0001\', \'base_info:name\', \'zhangsan1\'
put \'user_info\', \'zhangsan_20150701_0002\', \'base_info:name\', \'zhangsan2\'
put \'user_info\', \'zhangsan_20150701_0001\', \'base_info:age\', \'21\'
put \'user_info\', \'zhangsan_20150701_0002\', \'base_info:age\', \'22\'
put \'user_info\', \'zhangsan_20150701_0001\', \'extra_info:Hobbies\', \'music\'
put \'user_info\', \'zhangsan_20150701_0002\', \'extra_info:Hobbies\', \'sport\'
查(get + scan)
# 获取 user_info 表中 row key 为 user0001 的所有信息
get \'user_info\', \'user0001\'
# 获取user表中row key为user0001，base_info列簇的所有信息
get \'user_info\', \'user0001\', \'base_info\'
# 查询user_info表中的所有信息
scan \'user_info\'
# 查询user_info表中列簇为base_info的信息
scan \'user_info\', {COLUMNS => \'base_info\'}
删
# 删除user_info表row key为zhangsan_20150701_0001，列标示符为base_info:name的数据
delete \'user_info\', \'zhangsan_20150701_0001\', \'base_info:name\'
scan \'user_info\', {COLUMNS => \'base_info\'}
使用过滤器
# 从mytable表中找到row1开头的所有row，那么就需要用到PrefixFilter
scan \'user_info\', { FILTER => "(PrefixFilter (\'zhangsan\'))"}
# 使用KeyOnlyFilter
scan \'user_info\', { FILTER => "(KeyOnlyFilter ())"}
# 使用 FirstKeyOnlyFilter()
scan \'user_info\', { FILTER => "FirstKeyOnlyFilter ()"}
# 使用 MultipleColumnPrefixFilter()
scan \'user_info\', { FILTER => "MultipleColumnPrefixFilter(\'age\',\'name\')"}
# 使用 ColumnCountGetFilter()
scan \'user_info\', { FILTER => "ColumnCountGetFilter(2)"}