hbase的shell脚本是通过ruby实现的

5rfgn

　　hbase中的shell命令是通过ruby实现的，所有的命令都在

hbase-0.92.1-cdh4.1.2\src\main\ruby


目录下面，在shell中通过hbase shell启动hbase-->hirb.rb 加载ruby文件，通过hbase-0.92.1-cdh4.1.2\src\main\ruby\shell.rb

　　中配置的命令实现对hbase的操作，下面是shell.rb中配置部分代码。

# Load commands base class
require 'shell/commands'
# Load all commands
Shell.load_command_group(
'general',
:full_name => 'GENERAL HBASE SHELL COMMANDS',
:commands => %w[
status
version
whoami
]
)
Shell.load_command_group(
'ddl',
:full_name => 'TABLES MANAGEMENT COMMANDS',
:commands => %w[
alter
create
describe
disable
disable_all
is_disabled
drop
drop_all
enable
enable_all
is_enabled
exists
list
show_filters
alter_status
alter_async
]
)
Shell.load_command_group(
'dml',
:full_name => 'DATA MANIPULATION COMMANDS',
:commands => %w[
count
delete
deleteall
get
get_counter
incr
put
scan
truncate
]
)
Shell.load_command_group(
'tools',
:full_name => 'HBASE SURGERY TOOLS',
:comment => "WARNING: Above commands are for 'experts'-only as misuse can damage an install",
:commands => %w[
assign
balancer
balance_switch
close_region
compact
flush
major_compact
move
split
unassign
zk_dump
hlog_roll
]
)
Shell.load_command_group(
'replication',
:full_name => 'CLUSTER REPLICATION TOOLS',
:comment => "In order to use these tools, hbase.replication must be true. enabling/disabling is currently unsupported",
:commands => %w[
add_peer
remove_peer
list_peers
enable_peer
disable_peer
start_replication
stop_replication
]
)
Shell.load_command_group(
'security',
:full_name => 'SECURITY TOOLS',
:comment => "NOTE: Above commands are only applicable if running with the AccessController coprocessor",
:commands => %w[
grant
revoke
user_permission
]
)

　　

如果要更深入了解可以访问http://www.tuicool.com/articles/BbuaQr

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