hbase(main):030:0> help
HBase Shell, version 0.96.1.1-hadoop1, rUnknown, Tue Dec 17 11:52:14 PST 2013
Type 'help "COMMAND"', (e.g. 'help "get"' -- the quotes are necessary) for help on a specific command.
Commands are grouped. Type 'help "COMMAND_GROUP"', (e.g. 'help "general"') for help on a command group.
COMMAND GROUPS:
Group name: general
Commands: status, table_help, version, whoami
Group name: ddl
Commands: alter, alter_async, alter_status, create, describe, disable, disable_all, drop, drop_all, enable, enable_all, exists, get_table, is_disabled, is_enabled, list, show_filters
Group name: namespace
Commands: alter_namespace, create_namespace, describe_namespace, drop_namespace, list_namespace, list_namespace_tables
Group name: dml
Commands: count, delete, deleteall, get, get_counter, incr, put, scan, truncate, truncate_preserve
Group name: tools
Commands: assign, balance_switch, balancer, catalogjanitor_enabled, catalogjanitor_run, catalogjanitor_switch, close_region, compact, flush, hlog_roll, major_compact, merge_region, move, split, trace, unassign, zk_dump
Group name: replication
Commands: add_peer, disable_peer, enable_peer, list_peers, list_replicated_tables, remove_peer
Group name: snapshot
Commands: clone_snapshot, delete_snapshot, list_snapshots, rename_snapshot, restore_snapshot, snapshot
Group name: security
Commands: grant, revoke, user_permission
SHELL USAGE:
Quote all names in HBase Shell such as table and column names. Commas delimit
command parameters. Type <RETURN> after entering a command to run it.
Dictionaries of configuration used in the creation and alteration of tables are
Ruby Hashes. They look like this:
{'key1' => 'value1', 'key2' => 'value2', ...}
and are opened and closed with curley-braces. Key/values are delimited by the
'=>' character combination. Usually keys are predefined constants such as
NAME, VERSIONS, COMPRESSION, etc. Constants do not need to be quoted. Type
'Object.constants' to see a (messy) list of all constants in the environment.
If you are using binary keys or values and need to enter them in the shell, use
double-quote'd hexadecimal representation. For example:
hbase> get 't1', "key\x03\x3f\xcd"
hbase> get 't1', "key\003\023\011"
hbase> put 't1', "test\xef\xff", 'f1:', "\x01\x33\x40"
The HBase shell is the (J)Ruby IRB with the above HBase-specific commands added.
For more on the HBase Shell, see http://hbase.apache.org/docs/current/book.html
1、进入shell,进入hbase的shell界面
hbase shell HBase Shell; enter 'help<RETURN>' for list of supported commands. Type "exit<RETURN>" to leave the HBase Shell Version 0.96.1.1-hadoop1, rUnknown, Tue Dec 17 11:52:14 PST 2013
2、查看hbase的状态
status 1 servers, 0 dead, 2.0000 average load
3、查看hbase的版本
version 0.96.1.1-hadoop1, rUnknown, Tue Dec 17 11:52:14 PST 2013
4、创建表
1、创建表
hbase(main):004:0> create 'tab1','name','age','addr'
0 row(s) in 1.5040 seconds
=> Hbase::Table - tab1
tab1:表名
'name','age','addr'：3个列族
创建新表至少要有一个列族。
2、查看表
（1）list
TABLE
tab1
（2）describe 'tab1'
DESCRIPTION ENABLED
'tab1', {NAME => 'addr', DATA_BLOCK_ENCODING => 'NO true
NE', BLOOMFILTER => 'ROW', REPLICATION_SCOPE => '0'
, VERSIONS => '1', COMPRESSION => 'NONE', MIN_VERSI
ONS => '0', TTL => '2147483647', KEEP_DELETED_CELLS
=> 'false', BLOCKSIZE => '65536', IN_MEMORY => 'fa
lse', BLOCKCACHE => 'true'}, {NAME => 'age', DATA_B
LOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPL
ICATION_SCOPE => '0', VERSIONS => '1', COMPRESSION
=> 'NONE', MIN_VERSIONS => '0', TTL => '2147483647'
, KEEP_DELETED_CELLS => 'false', BLOCKSIZE => '6553
6', IN_MEMORY => 'false', BLOCKCACHE => 'true'}, {N
AME => 'name', DATA_BLOCK_ENCODING => 'NONE', BLOOM
FILTER => 'ROW', REPLICATION_SCOPE => '0', VERSIONS
=> '1', COMPRESSION => 'NONE', MIN_VERSIONS => '0'
, TTL => '2147483647', KEEP_DELETED_CELLS => 'false
', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOC
KCACHE => 'true'}
1 row(s) in 0.1410 seconds
3、添加数据 put 'tab1','row2','age:age','24' 0 row(s) in 0.0270 seconds 注：tab1:表名，row2：row key，'age:age'：列名和列的key，24列的value
5、查看表
（1）查看全部记录
scan 'tab1' ROW COLUMN+CELL row1 column=name:name, timestamp=1391849407402, value=ru row2 column=age:age, timestamp=1391849930953, value=24
（2）查看部分记录
根据row key查询记录 get 'tab1','ruge' COLUMN CELL name:mingzi timestamp=1391852952026, value=ru name:name timestamp=1391853119913, value=ruge name:xingming timestamp=1391852798192, value=ruge
注：tab1：表名，ruge：row key
根据row key，和列族查询记录 get 'tab1','row2','age' COLUMN CELL age:age timestamp=1391849930953, value=24
注：tab1：表名，row2：row key, age：列族
根据row key，列族和列名查询你一条记录 get 'tab1','ruge','name:xingming' COLUMN CELL name:xingming timestamp=1391852798192, value=ruge
6、修改表记录
put 'tab1','ruge','age:nianling','21'
7、删除记录
（1）删除一条记录
delete 'tab1','ruge','age:nianling'
注：age:nianling'：表示一列
（2）删除一行记录
deleteall 'tab1','row1'
row1：表示行键，这样会把这个行键的所有记录都删除
8、查看表有多少行
scan 'tab1'
ROW COLUMN+CELL
row2 column=age:age, timestamp=1391849930953, value=24
ruge column=age:age_nl, timestamp=1391936937906, value=25
ruge column=name:mingzi, timestamp=1391852952026, value=ru
ruge column=name:name, timestamp=1391853119913, value=ruge
ruge column=name:xingming, timestamp=1391852798192, value=ruge
这个表有2行
使用count命令查看
count 'tab1' 2 row(s) in 0.0860 seconds
9、清空表
truncate 'test' Truncating 'test' table (it may take a while): - Disabling table... - Dropping table... - Creating table...